{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-105636","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-05T16:40:39.611Z","datePublished":"2026-10-05T18:02:53.127Z","dateUpdated":"2026-10-07T21:39:44.814Z"},"containers":{"cna":{"title":"Plane: SSRF via HTTP redirect in webhook delivery (allow_redirects not set)","problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.9,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/makeplane/plane/security/advisories/GHSA-mq87-52pf-hm3h","tags":["x_refsource_CONFIRM"],"url":"https://github.com/makeplane/plane/security/advisories/GHSA-mq87-52pf-hm3h"},{"name":"https://github.com/makeplane/plane/pull/9163","tags":["x_refsource_MISC"],"url":"https://github.com/makeplane/plane/pull/9163"},{"name":"https://github.com/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615","tags":["x_refsource_MISC"],"url":"https://github.com/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615"},{"name":"https://github.com/makeplane/plane/releases/tag/v1.4.0","tags":["x_refsource_MISC"],"url":"https://github.com/makeplane/plane/releases/tag/v1.4.0"}],"affected":[{"vendor":"makeplane","product":"plane","versions":[{"version":"< 1.4.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-05T18:02:53.127Z"},"descriptions":[{"lang":"en","value":"Plane is an open-source project management tool. Prior to 1.4.0, the webhook delivery task in apps/api/plane/bgtasks/webhook_task.py calls requests.post() without allow_redirects=False and does not validate redirect targets. validate_url() blocks private, loopback, link-local, and reserved addresses in the original webhook URL, but the final URL reached after one or more redirects is not checked. A user who can create a workspace can register a webhook pointing to an attacker-controlled public endpoint that returns a 302 redirect to an internal address. The Plane worker then fetches internal resources, including cloud metadata, and stores the response body in webhook_logs, where the attacker can retrieve it through the workspace webhook-logs API. This issue is fixed in 1.4.0."}],"source":{"advisory":"GHSA-mq87-52pf-hm3h","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/makeplane/plane/security/advisories/GHSA-mq87-52pf-hm3h","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-07T21:39:13.833798Z","id":"CVE-2026-105636","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-07T21:39:44.814Z"}}]}}