CVE-2026-18510 TranslatePress <= 3.2.6 - Unauthenticated Stored Cross-Site Scripting via Comment Content
Unauthenticated attackers can inject arbitrary web scripts via comment content in TranslatePress, leading to code execution when users view the page.
- 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-2026-18510?
CVE-2026-18510 is a high-severity cross-site scripting vulnerability in cozmoslabs TranslatePress – Translate Multilingual sites with AI Translation, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The TranslatePress – Translate Multilingual sites with AI Translation plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content (URL-encoded gettext markers) in all versions up to, and including, 3.2.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Comment moderation may delay exploitation for first-time commenters, but does not prevent it, as the payload uses only WordPress-permitted tags and attributes with percent-encoded characters that pass wp_kses URL validation unmodified.
Weakness: CWE-79
Which versions are affected by CVE-2026-18510?
How do I fix CVE-2026-18510?
No fix has been published for CVE-2026-18510 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-2026-18510 being exploited?
There is no known exploitation of CVE-2026-18510 in the wild and no public exploit code.
Sources
Also known as GHSA-fhvv-89cj-8528.