{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-34974", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-31T19:38:31.616Z", "datePublished": "2026-04-02T14:48:22.619Z", "dateUpdated": "2026-04-02T16:22:14.990Z"}, "containers": {"cna": {"title": "phpMyFAQ: SVG Sanitizer Bypass via HTML Entity Encoding leads to Stored XSS and Privilege Escalation", "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": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-5crx-pfhq-4hgg", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-5crx-pfhq-4hgg"}, {"name": "https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1"}], "affected": [{"vendor": "thorsten", "product": "phpMyFAQ", "versions": [{"version": "< 4.1.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-02T14:48:22.619Z"}, "descriptions": [{"lang": "en", "value": "phpMyFAQ is an open source FAQ web application. Prior to version 4.1.1, the regex-based SVG sanitizer in phpMyFAQ (SvgSanitizer.php) can be bypassed using HTML entity encoding in javascript: URLs within SVG <a href> attributes. Any user with edit_faq permission can upload a malicious SVG that executes arbitrary JavaScript when viewed, enabling privilege escalation from editor to full admin takeover. This issue has been patched in version 4.1.1."}], "source": {"advisory": "GHSA-5crx-pfhq-4hgg", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-5crx-pfhq-4hgg", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-02T16:16:00.518178Z", "id": "CVE-2026-34974", "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": "2026-04-02T16:22:14.990Z"}}]}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:phpmyfaq:phpmyfaq:*:*:*:*:*:*:*:*", "matchCriteriaId": "407BB5BA-44EA-49EB-8072-4ACD67864598", "versionEndExcluding": "4.1.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "phpMyFAQ is an open source FAQ web application. Prior to version 4.1.1, the regex-based SVG sanitizer in phpMyFAQ (SvgSanitizer.php) can be bypassed using HTML entity encoding in javascript: URLs within SVG <a href> attributes. Any user with edit_faq permission can upload a malicious SVG that executes arbitrary JavaScript when viewed, enabling privilege escalation from editor to full admin takeover. This issue has been patched in version 4.1.1."}], "id": "CVE-2026-34974", "lastModified": "2026-04-06T16:09:58.670", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-02T15:16:51.903", "references": [{"source": "security-advisories@github.com", "tags": ["Product"], "url": "https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-5crx-pfhq-4hgg"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-5crx-pfhq-4hgg"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.1.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "phpMyFAQ", "source": "cna", "vendor": "thorsten"}, "product": "phpmyfaq", "vendor": "thorsten"}], "analysis": {"en": {"generated_at": "2026-04-06T19:42:55.258498+00:00", "value": {"mitigation_remediation": ["Upgrade phpMyFAQ to version 4.1.1 or newer, which contains the fixed SVG sanitizer.", "If an immediate upgrade is not feasible, disable or restrict SVG uploads for users with edit_faq permission, or remove the offending SVG files from the FAQ database.", "Continuously monitor for suspicious SVG uploads and validate uploaded content against a tight whitelist."], "summary": {"action": "Immediate Patch", "impact": "Stored XSS enabling privilege escalation"}, "threat_synthesis": {"affected_systems": "The vulnerability affects the open source FAQ application phpMyFAQ (developed by thorsten) prior to version 4.1.1. Versions 4.1.1 and later contain the patch that fixes the sanitizer bypass.", "description_and_impact": "A regex-based SVG sanitizer in phpMyFAQ can be bypassed using HTML entity encoding inside javascript: URLs within SVG <a href> attributes. This allows an attacker who can upload an SVG as an editor to execute arbitrary JavaScript in the context of FAQ viewers, leading to stored cross\u2011site scripting and a privilege escalation from editor to administrator.", "risk_and_exploitability": "The flaw has a CVSS score of 5.4, indicating moderate severity, and an EPSS score of less than 1%, suggesting low likelihood of exploitation. It is not listed in CISA\u2019s KEV catalog. An attacker must be able to upload SVG content with edit_faq permission, meaning the attack vector is an authenticated internal attacker. When successful, the attacker can run arbitrary code and elevate privileges to full administrator."}}}}, "created": "2026-04-02T20:11:37.266273+00:00", "updated": "2026-04-07T07:56:09.857166+00:00", "vendors": ["thorsten", "thorsten$PRODUCT$phpmyfaq"]}