CVE-2026-19855
Last modified
CVE-2026-19855 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.
Description
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.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Unknown | CleanTalk | < 6.87 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-19855?
How severe is CVE-2026-19855?
How do I fix CVE-2026-19855?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-19848The ProfilePress WordPress plugin before 4.17.1 does not str…6.5
- CVE-2026-1985The Press3D plugin for WordPress is vulnerable to Stored Cro…6.4
- CVE-2026-19851A Use of Default Password vulnerability affecting Tuleap Ent…7.7
- CVE-2026-19852NewSiteServer (NSS) developed by CyberTutor has an Arbitrary…6.1
- CVE-2026-19853NewSiteServer (NSS) developed by CyberTutor has a Missing Au…5.3
- CVE-2026-19854When the ClickHouse plugin uses Native protocol (the default…6.1
- CVE-2026-19857The Formidable Forms WordPress plugin before 6.35 does not p…4.8
- CVE-2026-19858The JetFormBuilder — Dynamic Blocks Form Builder WordPress p…7.5
- CVE-2026-19859The JetFormBuilder WordPress plugin before 3.6.5.2 does not …6.5
- CVE-2026-1986The FloristPress for Woo – Customize your eCommerce store fo…6.1
- CVE-2026-19861The JetFormBuilder — Dynamic Blocks Form Builder WordPress p…4.7
- CVE-2026-19862The JetFormBuilder WordPress plugin before 3.6.5.2 does not …4.8
Are you affected by CVE-2026-19855?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST