CVE-2025-26978 WordPress FS Poster plugin <= 6.5.8 - SQL Injection vulnerability
An attacker can exploit SQL injection in the FS Poster WordPress plugin to read or modify database contents.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-26978?
CVE-2025-26978 is a high-severity SQL injection vulnerability in fs-code FS Poster, published on 15 Mar 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in fs-code FS Poster fs-poster.This issue affects FS Poster: from n/a through <= 6.5.8.
Weakness: CWE-89
Which versions are affected by CVE-2025-26978?
How do I fix CVE-2025-26978?
No fix has been published for CVE-2025-26978 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2025-26978 being exploited?
There is no known exploitation of CVE-2025-26978 in the wild and no public exploit code.
Sources
Also known as GHSA-87c8-vcwq-2gcc.