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  4. CVE 2026 77993 joomla extension joomlackfr reflected xss in page
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Back to active CVEs
Medium · CVSS 5.3CVE-2026-77993

Joomla Extension - joomlack.fr - Reflected XSS in Page Builder CK < 3.6.5CVE-2026-77993

Answer in brief

CVE-2026-77993 records a Medium severity (CVSS 5.3) vulnerability in Joomla Extension - joomlack.fr - Reflected XSS in Page Builder CK < 3.6.5. The current sources do not mark it as known exploited. The current feed maps joomlack.fr/Page Builder CK 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 24, 2026Updated Aug 26, 2026Source checked Oct 8, 2026First seen by HOL Aug 24, 2026Material review Aug 26, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.3
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 5.3. 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 joomlack.fr/Page Builder CK extension for Joomla (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
joomlack.fr/Page Builder CK extension for Joomlageneric1.0.0-3.6.4Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for joomlack.fr/Page Builder CK 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 24, 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 24, 2026

Sources and claim methodology

  • Source referencejoomlack.fr
Upstream source description

Joomla Extension - joomlack.fr - Reflected XSS in Page Builder CK < 3.6.5 - The Joomla extension Page Builder CK is vulnerable to a reflected XSS via the iscontenttype parameter.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WordPress ShortPixel Image Optimizer plugin <= 6.5.6 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79
  • WordPress WP Store Locator plugin <= 3.0.3 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79
  • WordPress MasterStudy LMS plugin <= 3.7.52 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79
  • WordPress Robo Gallery plugin <= 5.1.6 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79
  • WordPress Gutenberg Blocks by Kadence Blocks plugin <= 3.7.12 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79
  • WordPress WP plugin Info Card plugin <= 6.3.5 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 8, 2026
References
1 linked source
Open source record