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  4. CVE 2026 66917 joomla extension joomgalleryfriendsnet stored xss
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Back to active CVEs
High · CVSS 8.6CVE-2026-66917

Joomla Extension - joomgalleryfriends.net - Stored XSS in JoomGallery < 4.4.0CVE-2026-66917

Answer in brief

CVE-2026-66917 records a High severity (CVSS 8.6) vulnerability in Joomla Extension - joomgalleryfriends.net - Stored XSS in JoomGallery < 4.4.0. The current sources do not mark it as known exploited. The current feed maps joomgalleryfriends.net/JoomGallery extension for Joomla (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 22, 2026Updated Aug 26, 2026Source checked Oct 6, 2026First seen by HOL Aug 22, 2026Material review Aug 26, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.6
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 8.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps joomgalleryfriends.net/JoomGallery extension for Joomla (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
joomgalleryfriends.net/JoomGallery extension for Joomlageneric4.0.0-4.3.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for joomgalleryfriends.net/JoomGallery extension for Joomla.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Aug 22, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 22, 2026

Sources and claim methodology

  • Source referencejoomgalleryfriends.net
Upstream source description

Joomla Extension - joomgalleryfriends.net - Stored XSS in JoomGallery < 4.4.0 - An authenticated, privileged can store an XSS payload in any image causing JS execution in every visitor's browser.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Cross-Site Scripting (XSS) vulnerability identified in OpenText™ Content ManagementAlso CWE-79
  • SimpleChat: Stored XSS via group document filename in inline onclick handlerAlso CWE-79
  • getformwork URI Sanitizer DomSanitizer.php sanitizeNodeAttribute cross site scriptingAlso CWE-79
  • Reflected XSS in Akıllı Ticaret's E-Commerce PackAlso CWE-79
  • Denial-of-service vulnerability in ESET PROTECT On-PremSame generic ecosystem
  • HortusFox < 6.2 Remote Code Execution via Theme ImportSame generic ecosystem

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 6, 2026
References
1 linked source
Open source record