{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-2736", "assignerOrgId": "0cbda920-cd7f-484a-8e76-bf7f4b7f4516", "state": "PUBLISHED", "assignerShortName": "INCIBE", "dateReserved": "2026-02-19T08:18:54.936Z", "datePublished": "2026-02-19T08:39:46.150Z", "dateUpdated": "2026-02-19T08:39:46.150Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "OpenCms", "vendor": "Alkacon", "versions": [{"status": "affected", "version": "18.0"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:alkacon:opencms:18.0:*:*:*:*:*:*:*", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "OR"}], "credits": [{"lang": "en", "type": "finder", "value": "Gonzalo Aguilar Garc\u00eda (6h4ack)"}], "datePublic": "2026-02-19T08:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Reflected Cross-site Scripting (XSS) in Alkacon's OpenCms v18.0, which allows an attacker to execute JavaScript code in the victim's browser by sending the victim a malicious URL containing the \u2018q\u2019 parameter in \u2018/search/index.html\u2019. This vulnerability can be exploited to steal sensitive user information such as session cookies, or to perform actions while impersonating the user."}], "value": "Reflected Cross-site Scripting (XSS) in Alkacon's OpenCms v18.0, which allows an attacker to execute JavaScript code in the victim's browser by sending the victim a malicious URL containing the \u2018q\u2019 parameter in \u2018/search/index.html\u2019. This vulnerability can be exploited to steal sensitive user information such as session cookies, or to perform actions while impersonating the user."}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 5.1, "baseSeverity": "MEDIUM", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "ACTIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/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-79", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "0cbda920-cd7f-484a-8e76-bf7f4b7f4516", "shortName": "INCIBE", "dateUpdated": "2026-02-19T08:39:46.150Z"}, "references": [{"tags": ["patch"], "url": "https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-alkacons-opencms"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "The vulnerabilities have been fixed by the Alkacon team in version 19.0."}], "value": "The vulnerabilities have been fixed by the Alkacon team in version 19.0."}], "source": {"discovery": "EXTERNAL"}, "title": "Reflected Cross-Site Scripting (XSS) vulnerability in Alkacon's OpenCms", "x_generator": {"engine": "Vulnogram 0.5.0"}}}}

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