Public vulnerability disclosure

CVE-2026-77026

Joomla Extension - tassos.gr - Client-controlled validation bypass in Convert Forms extension 1.0.0-4.4.16, 5.0.0-5.2.5

publishedCWE-602

Joomla Extension - tassos.gr - Client-controlled validation bypass in Convert Forms extension 1.0.0-4.4.16, 5.0.0-5.2.5 - CAPTCHA and field validation bypass.

Investigate in Cyber JSON Markdown

Technical severity6.9 mediumCVSS 4.0 · CNA: Joomla

Published2026-08-20Source updated 2026-11-02

Collected2026-11-022 attributed sources

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
Convert Forms extension for Joomla tassos.gr	1.0.0-4.4.16 (affected) 5.0.0-5.2.5 (affected) Other versions: unaffected	CNA: Joomla

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
4.0 / 6.9 medium	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N`	CNA: Joomla

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

https://www.tassos.gr/joomla-extensions/convert-formsCNA: Joomla · product