{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55085", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-16T14:41:54.578Z", "datePublished": "2026-08-19T19:34:27.269Z", "dateUpdated": "2026-08-19T19:34:27.269Z"}, "containers": {"cna": {"title": "Etherpad: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in etherpad-lite", "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": "LOW", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/ether/etherpad/security/advisories/GHSA-f7h5-v9hm-548j", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/ether/etherpad/security/advisories/GHSA-f7h5-v9hm-548j"}, {"name": "https://github.com/ether/etherpad/pull/7937", "tags": ["x_refsource_MISC"], "url": "https://github.com/ether/etherpad/pull/7937"}, {"name": "https://github.com/ether/etherpad/commit/d828185efcac9abc2e46e6da1c171393500fa319", "tags": ["x_refsource_MISC"], "url": "https://github.com/ether/etherpad/commit/d828185efcac9abc2e46e6da1c171393500fa319"}, {"name": "https://github.com/ether/etherpad/releases/tag/v3.3.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/ether/etherpad/releases/tag/v3.3.1"}], "affected": [{"vendor": "ether", "product": "etherpad", "versions": [{"version": "< 3.3.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-19T19:34:27.269Z"}, "descriptions": [{"lang": "en", "value": "Etherpad is a real-time collaborative editor. Prior to 3.3.1, result.appendSpan in src/static/js/domline.ts interpolates the start attribute of a numbered list directly into an unquoted ol start attribute before assigning the generated markup to node.innerHTML. ImportEtherpad.setPadRaw in src/node/utils/ImportEtherpad.ts accepts attacker-controlled attribute-pool values from a crafted .etherpad import, including list:number1 and a malicious start value. Any user with write access to a pad can store markup that executes as cross-site scripting when another user opens the pad or /timeslider, including when an administrator views the pad. This issue is fixed in version 3.3.1."}], "source": {"advisory": "GHSA-f7h5-v9hm-548j", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "etherpad", "vendor": "ether", "versions": [{"status": "affected", "version": "< 3.3.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Etherpad is a real-time collaborative editor. Prior to 3.3.1, result.appendSpan in src/static/js/domline.ts interpolates the start attribute of a numbered list directly into an unquoted ol start attribute before assigning the generated markup to node.innerHTML. ImportEtherpad.setPadRaw in src/node/utils/ImportEtherpad.ts accepts attacker-controlled attribute-pool values from a crafted .etherpad import, including list:number1 and a malicious start value. Any user with write access to a pad can store markup that executes as cross-site scripting when another user opens the pad or /timeslider, including when an administrator views the pad. This issue is fixed in version 3.3.1."}], "id": "CVE-2026-55085", "lastModified": "2026-08-19T20:17:17.280", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-08-19T20:17:17.280", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/ether/etherpad/commit/d828185efcac9abc2e46e6da1c171393500fa319"}, {"source": "security-advisories@github.com", "url": "https://github.com/ether/etherpad/pull/7937"}, {"source": "security-advisories@github.com", "url": "https://github.com/ether/etherpad/releases/tag/v3.3.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/ether/etherpad/security/advisories/GHSA-f7h5-v9hm-548j"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}