CVE-2026-59713 Leantime - OIDC Login CSRF via Unconditional State Verification Stub
Attackers can force victims into attacker-controlled sessions via OIDC login CSRF due to missing state validation in Leantime.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-59713?
CVE-2026-59713 is a high-severity vulnerability in Leantime, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-352
Which versions are affected by CVE-2026-59713?
How do I fix CVE-2026-59713?
No fix has been published for CVE-2026-59713 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-59713 being exploited?
There is no known exploitation of CVE-2026-59713 in the wild and no public exploit code.
Sources
Also known as GHSA-vwm8-rprj-29f7.