CleanTalk public input permits cross-site scripting
CleanTalk through 6.82 accepts attacker-controlled input through an unauthenticated request path and places it into a browser-executable output context without adequate neutralization. A victim who opens the crafted output can run script in the site's origin. The Patchstack CNA record does not disclose whether the payload is reflected or stored, or identify the endpoint, action, parameter or rendering function.
- Component
- Spam protection, AntiSpam, FireWall by CleanTalk
- Plugin slug
cleantalk-spam-protect- Affected
- n/a through 6.82
- Safe version
6.83- Published
- Jul 27, 2026
This CVE was published Jul 27, 2026 and is one of 8 known issues for this plugin.
Update, patch or deactivate.
Update CleanTalk to 6.83 or later. Avoid untrusted links targeting the site and review public plugin input for unexpected markup until patched.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
Unauthenticated Cross Site Scripting (XSS) in Spam protection, AntiSpam, FireWall by CleanTalk <= 6.82 versions.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L