CVE-2026-105690 Penpot: Server-side session not invalidated on logout; stale auth-token cookie remains valid for full profile access
Attackers can maintain access to victim accounts after logout because server-side sessions are not invalidated, allowing continued authenticated requests.
- 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-2026-105690?
CVE-2026-105690 is a medium-severity vulnerability in penpot, published on 5 Oct 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
Penpot is an open-source design and prototyping platform. Prior to 2.18.0, logout clears the browser's auth-token cookie without revoking the corresponding server-side session. A previously captured session token remains usable after the victim logs out and can continue to make authenticated requests with the victim's authority until natural expiration. This issue is fixed in version 2.18.0.
Weakness: CWE-613
Which versions are affected by CVE-2026-105690?
How do I fix CVE-2026-105690?
No fix has been published for CVE-2026-105690 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-105690 being exploited?
There is no known exploitation of CVE-2026-105690 in the wild and no public exploit code.
Sources
Also known as GHSA-mj9f-5cwq-7p3q.