CVE-2026-57656 WordPress Hester Core plugin <= 1.1.8 - Cross Site Scripting (XSS) vulnerability
An attacker can inject malicious scripts via author fields in the Hester Core WordPress plugin, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-57656?
CVE-2026-57656 is a medium-severity cross-site scripting vulnerability in peregrinethemes Hester Core, published on 26 Jun 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Author Cross Site Scripting (XSS) in Hester Core <= 1.1.8 versions.
Weakness: CWE-79
Which versions are affected by CVE-2026-57656?
How do I fix CVE-2026-57656?
No fix has been published for CVE-2026-57656 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-57656 being exploited?
There is no known exploitation of CVE-2026-57656 in the wild and no public exploit code.
Sources
Also known as GHSA-792x-cxvp-364w.