CVE-2026-77830 Cross-site scripting in Spam protection, Honeypot, Anti-Spam by CleanTalk
Authenticated attackers can inject scripts via comment placeholders, executing code for non-logged-in visitors in the CleanTalk WordPress plugin.
- 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-2026-77830?
CVE-2026-77830 is a high-severity cross-site scripting vulnerability in Spam protection, Honeypot, Anti-Spam by CleanTalk, published on 5 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Spam protection, Honeypot, Anti-Spam by CleanTalk plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content aria-label Placeholder in all versions up to, and including, 6.86 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload is deliverable via unauthenticated comment submission and executes exclusively for non-logged-in visitors; if comment moderation is enabled, an approving moderator must first publish the comment before the script reaches other users.
Weakness: CWE-79
Which versions are affected by CVE-2026-77830?
How do I fix CVE-2026-77830?
No fix has been published for CVE-2026-77830 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-2026-77830 being exploited?
There is no known exploitation of CVE-2026-77830 in the wild and no public exploit code.
Sources
Also known as GHSA-63v3-hvpj-cxrm.