{"id":"CVE-2026-59713","title":"Leantime contains an OIDC login CSRF vulnerability in the verifyState() method that unconditionally returns true without validating state parameters","summary":"Leantime contains an OIDC login CSRF vulnerability in the verifyState() method that unconditionally returns true without validating state parameters. Attackers can craft malicious callback URLs with attacker-controlled authorization code…","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","cwe":["CWE-352"],"vendor":"Leantime","product":"Leantime","affected":["Leantime <= 3.4.4"],"published":"2026-07-06","updated":"2026-09-17","sourceUpdated":"2026-09-17T18:16:56.050","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-59713","references":[{"url":"https://github.com/Leantime/leantime","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Leantime/leantime/commit/9630eb7db682fb1b4e23cdabf3428d03ec6f5094","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Leantime/leantime/issues/3535","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/leantime-oidc-login-csrf-via-unconditional-state-verification-stub","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-07-07T14:22:32.113353Z"},"epss":0.00234,"epssPercentile":0.12817,"ingestedAt":"2026-09-17T18:25:15.974Z","slug":"CVE-2026-59713","body":"## Overview\n\nLeantime contains an OIDC login CSRF vulnerability in the verifyState() method that unconditionally returns true without validating state parameters. Attackers can craft malicious callback URLs with attacker-controlled authorization codes to perform session fixation, logging victims in as the attacker.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}