CVE-2025-53641 Postiz allows header mutation in middleware facilitates resulting in SSRF
Attackers can inject headers to trigger SSRF, allowing unauthorized outbound requests from the server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-53641?
CVE-2025-53641 is a high-severity server-side request forgery vulnerability in gitroomhq postiz-app, published on 11 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Postiz is an AI social media scheduling tool. From 1.45.1 to 1.62.3, the Postiz frontend application allows an attacker to inject arbitrary HTTP headers into the middleware pipeline. This flaw enables a server-side request forgery (SSRF) condition, which can be exploited to initiate unauthorized outbound requests from the server hosting the Postiz application. This vulnerability is fixed in 1.62.3.
Weakness: CWE-918
Which versions are affected by CVE-2025-53641?
How do I fix CVE-2025-53641?
No fix has been published for CVE-2025-53641 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2025-53641 being exploited?
There is no known exploitation of CVE-2025-53641 in the wild and no public exploit code.
Sources
Also known as GHSA-48c8-25jq-m55f.