{"id":"CVE-2026-104973","state":"PUBLISHED","title":"Plane: DNS Rebinding Bypass of CVE-2026-30242 SSRF Fix in Webhook Delivery","description":"Plane is an open-source project management tool. Prior to 1.4.0, the fix for CVE-2026-30242 validates webhook IP addresses only when the webhook is created in apps/api/plane/app/serializers/webhook.py. The delivery task in apps/api/plane/bgtasks/webhook_task.py performs a separate DNS resolution when sending the request and does not validate the resolved IP address, allowing DNS rebinding to bypass the SSRF protection. This issue is fixed in 1.4.0.","publishedAt":"2026-10-05T17:41:33.110Z","updatedAt":"2026-10-07T20:54:46.744Z","severity":{"score":7.6,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["makeplane plane"],"affected":[{"vendor":"makeplane","product":"plane","versions":[{"version":"< 1.4.0","status":"affected"}]}],"references":["https://github.com/makeplane/plane/security/advisories/GHSA-whh3-5g95-4qhc","https://github.com/makeplane/plane/pull/9163","https://github.com/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615","https://github.com/makeplane/plane/releases/tag/v1.4.0","https://github.com/cthackers/adm-zip/security/advisories/GHSA-j5f4-cc29-5x44"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/104xxx/CVE-2026-104973.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-104973","state":"PUBLISHED","datePublished":"2026-10-05T17:41:33.110Z","dateUpdated":"2026-10-07T20:54:46.744Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-02T18:16:13.629Z"},"containers":{"cna":{"title":"Plane: DNS Rebinding Bypass of CVE-2026-30242 SSRF Fix in Webhook Delivery","descriptions":[{"lang":"en","value":"Plane is an open-source project management tool. Prior to 1.4.0, the fix for CVE-2026-30242 validates webhook IP addresses only when the webhook is created in apps/api/plane/app/serializers/webhook.py. The delivery task in apps/api/plane/bgtasks/webhook_task.py performs a separate DNS resolution when sending the request and does not validate the resolved IP address, allowing DNS rebinding to bypass the SSRF protection. This issue is fixed in 1.4.0."}],"affected":[{"vendor":"makeplane","product":"plane","versions":[{"version":"< 1.4.0","status":"affected"}]}],"references":[{"url":"https://github.com/makeplane/plane/security/advisories/GHSA-whh3-5g95-4qhc","name":"https://github.com/makeplane/plane/security/advisories/GHSA-whh3-5g95-4qhc","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/makeplane/plane/pull/9163","name":"https://github.com/makeplane/plane/pull/9163","tags":["x_refsource_MISC"]},{"url":"https://github.com/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615","name":"https://github.com/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615","tags":["x_refsource_MISC"]},{"url":"https://github.com/makeplane/plane/releases/tag/v1.4.0","name":"https://github.com/makeplane/plane/releases/tag/v1.4.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.6,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/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":"2026-10-05T17:41:33.110Z"},"source":{"advisory":"GHSA-whh3-5g95-4qhc","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/cthackers/adm-zip/security/advisories/GHSA-j5f4-cc29-5x44","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-07T20:54:23.222680Z","id":"CVE-2026-104973","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":"2026-10-07T20:54:46.744Z"}}]}}}