{"affected":[{"defaultStatus":"unaffected","product":"nocodb","source":"CNA: VulnCheck","vendor":"nocodb","versions":[{"lessThan":"2026.08.1","status":"affected","version":"0","versionType":"custom"},{"status":"unaffected","version":"2026.08.1","versionType":"custom"}]}],"cveId":"CVE-2026-126276","cwes":["CWE-287"],"description":"NocoDB before 2026.08.1 contains an authentication bypass vulnerability in oauth-token.service.ts that treats PKCE as a substitute for confidential client authentication, skipping client secret verification when omitted. Attackers holding a captured authorization code and PKCE verifier can mint access tokens and 60-day refresh tokens for a confidential client without knowing its secret.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.2,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","version":"4.0"},{"score":6.3,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","version":"3.1"},{"score":8.2,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":6.3,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","version":"3.1"}],"modifiedAt":1794565050733,"publishedAt":1794562603031,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/nocodb/nocodb/security/advisories/GHSA-4cx5-q9xx-5pgj"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/nocodb-before-2026.08.1-client-authentication-bypass-via-oauth-token-exchange"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/nocodb/nocodb/security/advisories/GHSA-4cx5-q9xx-5pgj"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/nocodb-before-2026.08.1-client-authentication-bypass-via-oauth-token-exchange"}],"remediation":[],"revision":"113e6d2d2919e7bc39463d01e5d679b5329927c20601bd23d4bdaeaf73c0424a","sources":[{"modifiedAt":1794562603031,"name":"CNA: VulnCheck","retrievedAt":1794564557138,"url":"https://www.cve.org/CVERecord?id=CVE-2026-126276"},{"modifiedAt":1794565050733,"name":"NVD","retrievedAt":1794572181978,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126276"}],"ssvc":null,"status":"published","title":"NocoDB before 2026.08.1 Client Authentication Bypass via OAuth Token Exchange","updatedAt":1794572181978}