CVE-2026-48905
Description
Lack of input filtering leads to an XSS vector in the HTML filter code.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Inadequate content filtering in Joomla's cleanAttributes filter allows XSS in versions 3.0.0-5.4.5 and 6.0.0-6.1.0.
Vulnerability
The cleanAttributes filter in Joomla! Framework lacks proper input filtering, leading to a cross-site scripting (XSS) vulnerability. Affected versions are Joomla! CMS 3.0.0 through 5.4.5 and 6.0.0 through 6.1.0 [1].
Exploitation
An attacker can inject malicious HTML attributes that bypass the filter, potentially executing arbitrary JavaScript in the context of a victim's browser. No authentication is required if the vulnerable filter is applied to user-supplied content (e.g., in comments or custom fields). The attack vector is via crafted input that is not sanitized by the cleanAttributes code.
Impact
Successful exploitation allows an attacker to perform XSS attacks, leading to information disclosure, session hijacking, or defacement. The impact is moderate as it requires user interaction (e.g., viewing the crafted content) but can affect any user accessing the affected Joomla! site.
Mitigation
Upgrade to Joomla! CMS version 5.4.6 or 6.1.1, which contain the fix [1]. No workaround is provided; users on unsupported versions should upgrade immediately.
AI Insight generated on May 26, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1News mentions
0No linked articles in our index yet.