CVE-2026-105636

{"id": "CVE-2026-105636", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-105636", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-10-07T21:39:13.833798Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.9, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "makeplane", "product": "plane", "versions": [{"status": "affected", "version": "< 1.4.0"}]}]}], "published": "2026-10-05T19:17:17.693", "references": [{"url": "https://github.com/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615", "source": "security-advisories@github.com"}, {"url": "https://github.com/makeplane/plane/pull/9163", "source": "security-advisories@github.com"}, {"url": "https://github.com/makeplane/plane/releases/tag/v1.4.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/makeplane/plane/security/advisories/GHSA-mq87-52pf-hm3h", "source": "security-advisories@github.com"}, {"url": "https://github.com/makeplane/plane/security/advisories/GHSA-mq87-52pf-hm3h", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-918"}]}], "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."}], "lastModified": "2026-10-07T22:17:02.053", "sourceIdentifier": "security-advisories@github.com"}