CVE-2026-93453 SOGo before 5.12.11 Password Reset Token Interception via Origin Header
Attackers can intercept password reset tokens by manipulating the Origin header, leading to account takeover in SOGo groupware.
- 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
- Available
What is CVE-2026-93453?
CVE-2026-93453 is a high-severity vulnerability in Alinto SOGo, published on 17 Sep 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
SOGo before 5.12.11 constructs password-reset links using the client-supplied Origin header as the authority, allowing unauthenticated attackers to redirect recovery tokens to attacker-controlled domains. Attackers can submit password recovery requests with a malicious Origin header to have valid password-reset tokens mailed to victim recovery addresses within links pointing to attacker infrastructure, enabling account takeover.
Weakness: CWE-640
Which versions are affected by CVE-2026-93453?
How do I fix CVE-2026-93453?
Upgrade to a fixed version.
Is CVE-2026-93453 being exploited?
There is no known exploitation of CVE-2026-93453 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as DEBIAN-CVE-2026-93453, GHSA-gqgv-6fx9-g8mx, MGASA-2026-0557, UBUNTU-CVE-2026-93453.