BIT-joomla-2026-90918

vendorUSosv

Joomla! Core - [20260908] - Core - XSS in HTML Mail Templates in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3

view advisory published 2026-10-07Licence: per source

Joomla! Core - [20260908] - Core - XSS in HTML Mail Templates in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - The mail template feature lacks an escaping mechanism, causing XSS vectors in multiple extensions.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-90918US	medium5.3	0.20% (10th)	—	2026-09-29
Joomla! Core - [20260908] - Core - XSS in HTML Mail Templates in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - The mail template feature lacks an escaping mechanism, causing XSS vectors in mul…

references

External citations — patches, advisories, analysis.

https://developer.joomla.org/security-centre/1088-20260908-core-xss-in-html-mail-templates.htmlADVISORY
https://nvd.nist.gov/vuln/detail/CVE-2026-90918WEB
https://www.joomla.org/WEB

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