CSRF in Leantime
CVE-2026-59713
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 codes to perform session fixation, logging victims in as the attacker.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (13.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Leantime — versions 0
Weakness classification (CWE)
References
- github.com/Leantime/leantime (product)
- github.com/Leantime/leantime/commit/9630eb7db682fb1b4e23cdabf3428d03ec6f5094 (patch)
- github.com/Leantime/leantime/issues/3535 (issue-tracking)
- www.vulncheck.com/advisories/leantime-oidc-login-csrf-via-unconditional-state-v… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-59713?
- CVE-2026-59713 is a high-severity vulnerability in Leantime, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.1/10. Published 2026-07-06.
- How severe is CVE-2026-59713?
- High severity. CVSS v3 base score is 8.1 out of 10.