CVE-2026-19855: medium-severity vulnerability in CleanTalk
Spam protection, Honeypot, Anti-Spam by CleanTalk < 6.87 - Unauthenticated Arbitrary Shortcode Execution via Comment Text
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 6.5epss 0.3%
The CleanTalk WordPress plugin before 6.87 does not prevent unauthenticated, user-supplied comment content from being passed to WordPress's shortcode engine, allowing any visitor to have arbitrary shortcodes registered on the site executed server-side and rendered to every subsequent visitor of the page.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected products
Unknown · CleanTalkpublic PoCs found — 1
cve_referencewpscan.com/vulnerability/c27f3657-261a-46cd-860c-0bdf5c849190/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.