{"id":"CVE-2026-49436","state":"PUBLISHED","title":"LinkAce vulnerable to stored XSS via 'javascript:' URI in Bulk Link API","description":"LinkAce is a self-hosted archive to collect website links. Prior to version 2.5.7, the Bulk Link API endpoint (`POST /api/v2/bulk/links`) accepts URLs without any format validation, allowing an authenticated user to store a `javascript:` URI. The stored URI is later rendered verbatim as an `href` in Blade templates, and clicking it executes arbitrary JavaScript in the victim's browser — exfiltrating cookies and session tokens. Version 2.5.7 fixes the issue.","publishedAt":"2026-08-20T21:40:54.087Z","updatedAt":"2026-08-21T15:47:30.083Z","severity":{"score":7.3,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["Kovah LinkAce"],"affected":[{"vendor":"Kovah","product":"LinkAce","versions":[{"version":"< 2.5.7","status":"affected"}]}],"references":["https://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39","https://github.com/Kovah/LinkAce/commit/642ac520347205a8277668bcae269bdc21223eae"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/49xxx/CVE-2026-49436.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49436","state":"PUBLISHED","datePublished":"2026-08-20T21:40:54.087Z","dateUpdated":"2026-08-21T15:47:30.083Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-30T02:43:33.105Z"},"containers":{"cna":{"title":"LinkAce vulnerable to stored XSS via 'javascript:' URI in Bulk Link API","descriptions":[{"lang":"en","value":"LinkAce is a self-hosted archive to collect website links. Prior to version 2.5.7, the Bulk Link API endpoint (`POST /api/v2/bulk/links`) accepts URLs without any format validation, allowing an authenticated user to store a `javascript:` URI. The stored URI is later rendered verbatim as an `href` in Blade templates, and clicking it executes arbitrary JavaScript in the victim's browser — exfiltrating cookies and session tokens. Version 2.5.7 fixes the issue."}],"affected":[{"vendor":"Kovah","product":"LinkAce","versions":[{"version":"< 2.5.7","status":"affected"}]}],"references":[{"url":"https://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39","name":"https://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Kovah/LinkAce/commit/642ac520347205a8277668bcae269bdc21223eae","name":"https://github.com/Kovah/LinkAce/commit/642ac520347205a8277668bcae269bdc21223eae","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-20T21:40:54.087Z"},"source":{"advisory":"GHSA-6r73-pchm-4m39","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-21T15:46:45.676388Z","id":"CVE-2026-49436","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-21T15:47:30.083Z"}}]}}}