{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-41661", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-21T23:58:43.803Z", "datePublished": "2026-05-07T02:59:34.649Z", "dateUpdated": "2026-05-07T14:58:41.314Z"}, "containers": {"cna": {"title": "Admidio: Reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/Admidio/admidio/security/advisories/GHSA-gq27-fc8w-vcmp", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/Admidio/admidio/security/advisories/GHSA-gq27-fc8w-vcmp"}, {"name": "https://github.com/Admidio/admidio/releases/tag/v5.0.9", "tags": ["x_refsource_MISC"], "url": "https://github.com/Admidio/admidio/releases/tag/v5.0.9"}], "affected": [{"vendor": "Admidio", "product": "admidio", "versions": [{"version": "< 5.0.9", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-07T02:59:34.649Z"}, "descriptions": [{"lang": "en", "value": "Admidio is an open-source user management solution. Prior to version 5.0.9, an unauthenticated attacker can execute arbitrary JavaScript in any Admidio user's browser through a reflected XSS in system/msg_window.php. The endpoint passes user input through htmlspecialchars(), which does not encode square brackets. A subsequent call to Language::prepareTextPlaceholders() converts those brackets into HTML angle brackets, producing executable markup. This issue has been patched in version 5.0.9."}], "source": {"advisory": "GHSA-gq27-fc8w-vcmp", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/Admidio/admidio/security/advisories/GHSA-gq27-fc8w-vcmp", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-07T13:55:38.338518Z", "id": "CVE-2026-41661", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-07T14:58:41.314Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-41661", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-07T13:55:38.338518Z"}}}], "references": [{"url": "https://github.com/Admidio/admidio/security/advisories/GHSA-gq27-fc8w-vcmp", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-07T13:55:47.499Z"}}], "cna": {"title": "Admidio: Reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion", "source": {"advisory": "GHSA-gq27-fc8w-vcmp", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}], "affected": [{"vendor": "Admidio", "product": "admidio", "versions": [{"status": "affected", "version": "< 5.0.9"}]}], "references": [{"url": "https://github.com/Admidio/admidio/security/advisories/GHSA-gq27-fc8w-vcmp", "name": "https://github.com/Admidio/admidio/security/advisories/GHSA-gq27-fc8w-vcmp", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/Admidio/admidio/releases/tag/v5.0.9", "name": "https://github.com/Admidio/admidio/releases/tag/v5.0.9", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Admidio is an open-source user management solution. Prior to version 5.0.9, an unauthenticated attacker can execute arbitrary JavaScript in any Admidio user's browser through a reflected XSS in system/msg_window.php. The endpoint passes user input through htmlspecialchars(), which does not encode square brackets. A subsequent call to Language::prepareTextPlaceholders() converts those brackets into HTML angle brackets, producing executable markup. This issue has been patched in version 5.0.9."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-79", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-07T02:59:34.649Z"}}}, "cveMetadata": {"cveId": "CVE-2026-41661", "state": "PUBLISHED", "dateUpdated": "2026-05-07T14:58:41.314Z", "dateReserved": "2026-04-21T23:58:43.803Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-05-07T02:59:34.649Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Admidio is an open-source user management solution. Prior to version 5.0.9, an unauthenticated attacker can execute arbitrary JavaScript in any Admidio user's browser through a reflected XSS in system/msg_window.php. The endpoint passes user input through htmlspecialchars(), which does not encode square brackets. A subsequent call to Language::prepareTextPlaceholders() converts those brackets into HTML angle brackets, producing executable markup. This issue has been patched in version 5.0.9."}], "id": "CVE-2026-41661", "lastModified": "2026-05-07T16:16:20.270", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-05-07T04:16:29.920", "references": [{"source": "[email protected]", "url": "https://github.com/Admidio/admidio/releases/tag/v5.0.9"}, {"source": "[email protected]", "url": "https://github.com/Admidio/admidio/security/advisories/GHSA-gq27-fc8w-vcmp"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/Admidio/admidio/security/advisories/GHSA-gq27-fc8w-vcmp"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "[email protected]", "type": "Secondary"}]}

{}