CVE-2026-59713

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 codes to perform session fixation, logging victims in as the attacker.

Affected Software

Weaknesses

• CWE-352: Cross-Site Request Forgery (CSRF)

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://github.com/Leantime/leantime/issues/3535
• https://github.com/Leantime/leantime
• https://github.com/Leantime/leantime/commit/9630eb7db682fb1b4e23cdabf3428d03ec6f5094
• https://www.vulncheck.com/advisories/leantime-oidc-login-csrf-via-unconditional-state-verification-stub

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