CVE-2026-54418 Leantime - Missing Authorization on TwoFA JSON-RPC Methods Allows Cross-Account 2FA Secret Disclosure and Bypass
Attackers can access other users' 2FA secrets and disable their 2FA via JSON-RPC methods lacking ownership checks in Leantime.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54418?
CVE-2026-54418 is a high-severity missing authorization vulnerability in Leantime, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Leantime through 3.6.2 exposes the JSON-RPC methods leantime.rpc.TwoFA.TwoFA.getSetupData, saveSecret, verifyAndEnable, and disable2FA, which act on a caller-supplied userId parameter with no ownership check, session pinning, or permission-attribute gate (unlike other RPC-exposed methods in the same dispatcher).
Weakness: CWE-862
Which versions are affected by CVE-2026-54418?
How do I fix CVE-2026-54418?
No fix has been published for CVE-2026-54418 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-54418 being exploited?
There is no known exploitation of CVE-2026-54418 in the wild and no public exploit code.
Sources
Also known as GHSA-j9c4-c6g5-c9fv.