{"id":"CVE-2026-63094","title":"SigNoz < 0.134.0 SSO OAuth State Manipulation Session Token Theft","summary":"SigNoz before 0.134.0 contains an open redirect vulnerability in the SSO authentication flow that allows unauthenticated attackers to steal session tokens from any user on instances configured with Google OAuth, SAML, or OIDC. Attackers …","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-601","CWE-345"],"vendor":"SigNoz","product":"signoz","affected":["signoz < 0.134.0"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-07-21T01:38:52.091051Z"},"exploitAvailable":true,"published":"2026-07-17","updated":"2026-11-08","sourceUpdated":"2026-11-08T14:07:38.946Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-63094","references":[{"url":"https://github.com/SigNoz/signoz/issues/11746","label":"Researcher Disclosure"},{"url":"https://github.com/SigNoz/signoz/releases/tag/v0.134.0","label":"signoz 0.134.0 Release Notes"},{"url":"https://github.com/SigNoz/signoz/pull/12172","label":"Pull Request"},{"url":"https://github.com/SigNoz/signoz/commit/253ca7dd7eb4f7a32a694c249eb0d5d0804d5619","label":"Patch Commit"},{"url":"https://www.vulncheck.com/advisories/signoz-sso-oauth-state-manipulation-session-token-theft"}],"tags":["cve.org","exploit-available"],"epss":0.00262,"epssPercentile":0.18088,"ingestedAt":"2026-11-08T14:51:22.273Z","slug":"CVE-2026-63094","body":"## Overview\n\nSigNoz before 0.134.0 contains an open redirect vulnerability in the SSO authentication flow that allows unauthenticated attackers to steal session tokens from any user on instances configured with Google OAuth, SAML, or OIDC. Attackers can call the unauthenticated sessions context endpoint with a ref parameter pointing to an attacker-controlled host, deliver the resulting crafted login URL to a victim, and receive the victim's access and refresh tokens when they complete SSO authentication.\n\n## Affected\n\n- `signoz < 0.134.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":57,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}