CVE-2026-102603 Gotify: Insufficiently Protected Password Change endpoint
An attacker with a valid client token can change a user's password without current credentials, leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-102603?
CVE-2026-102603 is a medium-severity authentication bypass vulnerability in gotify server, published on 13 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Gotify server is a simple server for sending and receiving messages in real-time per WebSocket. Prior to 3.0.0, the password change endpoint (POST /current/user/password) accepts a valid client token without requiring the account's current password or another elevated authentication step. An attacker who obtains a client token can set a new password for the associated user, taking control of password authentication and forcing account recovery through an administrator or direct database access. This issue is fixed in version 3.0.0.
Weakness: CWE-620
Which versions are affected by CVE-2026-102603?
7 open source packages ship an affected version, including github.com/gotify/server/v2, github.com/gotify/server and github.com/gotify/server/v3.
| Package | Affected | Fixed in |
|---|---|---|
github.com/gotify/server/v2 Go | All versions | None |
github.com/gotify/server/v2 Go | All versions to 2.9.1 | None |
github.com/gotify/server/v2 Go | All versions to 2.9.1 | None |
github.com/gotify/server Go | All versions | None |
github.com/gotify/server/v3 Go | All versions | 3.0.0 |
github.com/gotify/server/v3 Go | All versions | 3.0.0 |
1 more packages
github.com/gotify/server/v3 Go | All versions | 3.0.0 |
How do I fix CVE-2026-102603?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-102603 being exploited?
There is no known exploitation of CVE-2026-102603 in the wild and no public exploit code.
Sources
Also known as GHSA-3hcj-9m7p-wwm9, GO-2026-6772.