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  4. CVE 2026 77996 joomla extension yoothemecom authenticated
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Back to active CVEs
High · CVSS 7.5CVE-2026-77996

Joomla Extension - yootheme.com - Authenticated, privileged stored XSS in YOOtheme Pro 1.0.0-5.0.41CVE-2026-77996

Answer in brief

CVE-2026-77996 records a High severity (CVSS 7.5) vulnerability in Joomla Extension - yootheme.com - Authenticated, privileged stored XSS in YOOtheme Pro 1.0.0-5.0.41. The current sources do not mark it as known exploited. The current feed maps yootheme.com/YOOtheme Pro 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 25, 2026Updated Sep 23, 2026Source checked Oct 9, 2026First seen by HOL Aug 25, 2026Material review Sep 23, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.5
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 7.5. 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 yootheme.com/YOOtheme Pro extension for Joomla (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
yootheme.com/YOOtheme Pro extension for Joomlageneric1.0.0-5.0.41Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for yootheme.com/YOOtheme Pro 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 25, 2026

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

  2. Source modified

    Sep 23, 2026

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

  3. First seen by HOL

    Aug 25, 2026

Sources and claim methodology

  • Source referenceyootheme.com
Upstream source description

Joomla Extension - yootheme.com - Authenticated, privileged stored XSS in YOOtheme Pro 1.0.0-5.0.41 - Lack of escaping in the location custom field lead to a XSS vector.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • SmarterMail < Build 9777 Stored Mutation XSS via MathML Foreign ContentAlso CWE-79
  • Denial of Service via Eager Array Allocation During Deserialization in GuavaSame generic ecosystem
  • Reachable assertion in illumos bhyve REP string instruction emulation allows guest to panic hostSame generic ecosystem
  • KodExplorer < 4.55 Path Traversal via unzip_pre_name() ZIP ExtractionSame generic ecosystem
  • SmarterMail < Build 9777 SysAdmin Remote Code Execution via Volume MountSame generic ecosystem
  • SmarterMail < Build 9777 Stale JWT Role Claim Privilege Escalation via Refresh TokenSame generic ecosystem

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 9, 2026
References
1 linked source
Open source record