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CVE-2026-92232

Joomla! Core - [20260916] - Core - XSS filter bypass in InputFilter via whitespace characters in HTML data URIs in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3

MEDIUM
6.5
CVSS Score
Published: September 29, 2026 at 04:36 PM UTC
Updated: October 6, 2026 at 04:46 PM UTC
1 product affected across 1 vendorJoomla!

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

Joomla! Core - [20260916] - Core - XSS filter bypass in InputFilter via whitespace characters in HTML data URIs in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The cleanAttribute method removes HTML data URIs, however injected whitespaces characters could circumvent that cleanup, causing an XSS vector.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Joomla!· Joomladrupal
95%
1.5.0 ≤ v < 5.4.86.0.0 ≤ v < 6.1.31.0.0-3.0.61.5.0-5.4.84.0.0-4.1.06.0.0-6.1.3
Affected range stops below 5.4.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Product
Source: cverecord
https://www.joomla.org/
Vendor AdvisoryPatch
Source: cverecord
https://developer.joomla.org/security-centre/1096-20260916-core-xss-filter-bypass-in-inputfilter-via-whitespace-characters-in-html-data-uris.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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