{"containers": {"cna": {"affected": [{"product": "MyBB", "vendor": "MyBB", "versions": [{"status": "affected", "version": "< 1.8.24"}]}], "descriptions": [{"lang": "en", "value": "In MyBB before version 1.8.24, the custom MyCode (BBCode) for the visual editor doesn't escape input properly when rendering HTML, resulting in a DOM-based XSS vulnerability. The weakness can be exploited by pointing a victim to a page where the visual editor is active (e.g. as a post or Private Message) and operates on a maliciously crafted MyCode message. This may occur on pages where message content is pre-filled using a GET/POST parameter, or on reply pages where a previously saved malicious message is quoted. 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After upgrading MyBB to 1.8.24, make sure to update the version attribute in the `codebuttons` template for non-default themes to serve the latest version of the patched `jscripts/bbcodes_sceditor.js` file."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}]}, "references": {"reference_data": [{"name": "https://github.com/mybb/mybb/security/advisories/GHSA-37h7-vfv6-f8rj", "refsource": "CONFIRM", "url": "https://github.com/mybb/mybb/security/advisories/GHSA-37h7-vfv6-f8rj"}, {"name": "https://github.com/mybb/mybb/commit/37ad29dcd25489a37bdd89ebac761f22492558b0", "refsource": "MISC", "url": "https://github.com/mybb/mybb/commit/37ad29dcd25489a37bdd89ebac761f22492558b0"}, {"name": "https://mybb.com/versions/1.8.24/", "refsource": "MISC", "url": "https://mybb.com/versions/1.8.24/"}]}, "source": {"advisory": "GHSA-37h7-vfv6-f8rj", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T13:08:22.286Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/mybb/mybb/security/advisories/GHSA-37h7-vfv6-f8rj"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/mybb/mybb/commit/37ad29dcd25489a37bdd89ebac761f22492558b0"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://mybb.com/versions/1.8.24/"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2020-15139", "datePublished": "2020-08-10T21:35:13", "dateReserved": "2020-06-25T00:00:00", "dateUpdated": "2024-08-04T13:08:22.286Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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