{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55086", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-16T14:41:54.578Z", "datePublished": "2026-08-19T19:35:46.851Z", "dateUpdated": "2026-08-19T19:35:46.851Z"}, "containers": {"cna": {"title": "Etherpad: Import/export use Math.random() for temp file paths; predictable paths on shared /tmp enable symlink-based file overwrite", "problemTypes": [{"descriptions": [{"cweId": "CWE-59", "lang": "en", "description": "CWE-59: Improper Link Resolution Before File Access ('Link Following')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-377", "lang": "en", "description": "CWE-377: Insecure Temporary File", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/ether/etherpad/security/advisories/GHSA-2jwf-f4xq-f24h", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/ether/etherpad/security/advisories/GHSA-2jwf-f4xq-f24h"}, {"name": "https://github.com/ether/etherpad/pull/7784", "tags": ["x_refsource_MISC"], "url": "https://github.com/ether/etherpad/pull/7784"}, {"name": "https://github.com/ether/etherpad/commit/8c6104c5d5daf41f0d454acc04d42dffa0e0d996", "tags": ["x_refsource_MISC"], "url": "https://github.com/ether/etherpad/commit/8c6104c5d5daf41f0d454acc04d42dffa0e0d996"}, {"name": "https://github.com/ether/etherpad/releases/tag/v3.1.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/ether/etherpad/releases/tag/v3.1.0"}], "affected": [{"vendor": "ether", "product": "etherpad", "versions": [{"version": "< 3.1.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-19T19:35:46.851Z"}, "descriptions": [{"lang": "en", "value": "Etherpad is a real-time collaborative editor. Prior to 3.1.0, src/node/handler/ImportHandler.ts and src/node/handler/ExportHandler.ts derive temporary filenames from Math.random() and place them in os.tmpdir(). On a host with a shared world-writable temporary directory, a local unprivileged attacker who predicts a filename can precreate a symbolic link to a file writable by the Etherpad process. Subsequent import or export operations can follow the link through fs.writeFile, fs.rename, or document-conversion output and overwrite the target with partially attacker-controlled content. This issue is fixed in version 3.1.0."}], "source": {"advisory": "GHSA-2jwf-f4xq-f24h", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "etherpad", "vendor": "ether", "versions": [{"status": "affected", "version": "< 3.1.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Etherpad is a real-time collaborative editor. Prior to 3.1.0, src/node/handler/ImportHandler.ts and src/node/handler/ExportHandler.ts derive temporary filenames from Math.random() and place them in os.tmpdir(). On a host with a shared world-writable temporary directory, a local unprivileged attacker who predicts a filename can precreate a symbolic link to a file writable by the Etherpad process. Subsequent import or export operations can follow the link through fs.writeFile, fs.rename, or document-conversion output and overwrite the target with partially attacker-controlled content. This issue is fixed in version 3.1.0."}], "id": "CVE-2026-55086", "lastModified": "2026-08-19T20:17:17.520", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.1, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-08-19T20:17:17.520", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/ether/etherpad/commit/8c6104c5d5daf41f0d454acc04d42dffa0e0d996"}, {"source": "security-advisories@github.com", "url": "https://github.com/ether/etherpad/pull/7784"}, {"source": "security-advisories@github.com", "url": "https://github.com/ether/etherpad/releases/tag/v3.1.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/ether/etherpad/security/advisories/GHSA-2jwf-f4xq-f24h"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}, {"lang": "en", "value": "CWE-377"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}