CVE-2025-7453 saltbo zpan JSON Web Token token.go NewToken hard-coded password
Attackers can bypass authentication in the zpan Go library due to a hard-coded password in the JWT token generation function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-7453?
CVE-2025-7453 is a medium-severity vulnerability in saltbo zpan, published on 11 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in saltbo zpan up to 1.6.5/1.7.0-beta2. It has been rated as problematic. This issue affects the function NewToken of the file zpan/internal/app/service/token.go of the component JSON Web Token Handler. The manipulation with the input 123 leads to use of hard-coded password. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-7453?
3 open source packages ship an affected version, including github.com/saltbo/zpan.
| Package | Affected | Fixed in |
|---|---|---|
github.com/saltbo/zpan Go | All versions | 1.6.6 |
github.com/saltbo/zpan Go | All versions | 1.6.6 |
github.com/saltbo/zpan Go | All versions | 1.6.6 |
How do I fix CVE-2025-7453?
Upgrade github.com/saltbo/zpan to 1.6.6 or later.
Is CVE-2025-7453 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-7453 exists.
Sources
Also known as GHSA-2hfh-94w5-wxvf, GO-2026-6014.