{"id":"CVE-2026-68558","state":"PUBLISHED","title":"Wekan: SSRF filter bypass via DNS-resolving hostname in outgoing webhooks (incomplete fix of CVE-2026-53446)","description":"Wekan is open source kanban built with Meteor. From 8.36 until 9.74, the outgoing webhook Integration URL validator in models/integrations.js checked only the literal URL.hostname against regular expressions, so DNS names such as 169-254-169-254.nip.io passed that first-line check. The delivery path's fetchSafe guard already blocked the reported IPv4 destination, but its separate IPv4-only resolver and duplicated blocklist created inconsistent all-address-family enforcement and drift risk between input-time and connection-time validation. Version 9.74 makes server/lib/ssrfGuard.js resolve all addresses with `dns.lookup({ all: true })`, validate every result through the shared isIpBlocked logic, pin the connection, and block redirects. This issue is fixed in version 9.74.","publishedAt":"2026-08-19T19:22:18.718Z","updatedAt":"2026-08-19T19:44:48.392Z","severity":{"score":8.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["wekan wekan"],"affected":[{"vendor":"wekan","product":"wekan","versions":[{"version":">= 8.36, < 9.74","status":"affected"}]}],"references":["https://github.com/wekan/wekan/security/advisories/GHSA-66m2-4wfr-c45p","https://github.com/wekan/wekan/commit/ef845fe4a0adb82af436313310939cd48c0b1347","https://github.com/wekan/wekan/releases/tag/v9.74"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/68xxx/CVE-2026-68558.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68558","state":"PUBLISHED","datePublished":"2026-08-19T19:22:18.718Z","dateUpdated":"2026-08-19T19:44:48.392Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-30T19:56:44.102Z"},"containers":{"cna":{"title":"Wekan: SSRF filter bypass via DNS-resolving hostname in outgoing webhooks (incomplete fix of CVE-2026-53446)","descriptions":[{"lang":"en","value":"Wekan is open source kanban built with Meteor. From 8.36 until 9.74, the outgoing webhook Integration URL validator in models/integrations.js checked only the literal URL.hostname against regular expressions, so DNS names such as 169-254-169-254.nip.io passed that first-line check. The delivery path's fetchSafe guard already blocked the reported IPv4 destination, but its separate IPv4-only resolver and duplicated blocklist created inconsistent all-address-family enforcement and drift risk between input-time and connection-time validation. Version 9.74 makes server/lib/ssrfGuard.js resolve all addresses with `dns.lookup({ all: true })`, validate every result through the shared isIpBlocked logic, pin the connection, and block redirects. This issue is fixed in version 9.74."}],"affected":[{"vendor":"wekan","product":"wekan","versions":[{"version":">= 8.36, < 9.74","status":"affected"}]}],"references":[{"url":"https://github.com/wekan/wekan/security/advisories/GHSA-66m2-4wfr-c45p","name":"https://github.com/wekan/wekan/security/advisories/GHSA-66m2-4wfr-c45p","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/wekan/wekan/commit/ef845fe4a0adb82af436313310939cd48c0b1347","name":"https://github.com/wekan/wekan/commit/ef845fe4a0adb82af436313310939cd48c0b1347","tags":["x_refsource_MISC"]},{"url":"https://github.com/wekan/wekan/releases/tag/v9.74","name":"https://github.com/wekan/wekan/releases/tag/v9.74","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-19T19:22:18.718Z"},"source":{"advisory":"GHSA-66m2-4wfr-c45p","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/wekan/wekan/security/advisories/GHSA-66m2-4wfr-c45p","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-19T19:44:41.579228Z","id":"CVE-2026-68558","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-19T19:44:48.392Z"}}]}}}