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  4. CVE 2026 74253 joomla extension regularlabscom unauthenticated
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Back to active CVEs
Critical · CVSS 10.0CVE-2026-74253

Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 16.0.0

Answer in brief

CVE-2026-74253 records a Critical severity (CVSS 10.0) vulnerability in Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 16.0.0. The current sources do not mark it as known exploited. The current feed maps regularlabs.com/Sourcerer extension for Joomla (generic), regularlabs.com/Sourcerer 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 17, 2026Updated Aug 26, 2026Source checked Oct 2, 2026First seen by HOL Aug 17, 2026Material review Aug 26, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 10.0
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 10.0. 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 regularlabs.com/Sourcerer extension for Joomla (generic), regularlabs.com/Sourcerer extension for Joomla (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
regularlabs.com/Sourcerer extension for Joomlageneric1.0.0-13.1.1Not reported
regularlabs.com/Sourcerer extension for Joomlageneric1.0.0-15.0.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for regularlabs.com/Sourcerer extension for Joomla, regularlabs.com/Sourcerer 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 17, 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 17, 2026

Sources and claim methodology

  • Source referenceregularlabs.com
Upstream source description

Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 16.0.0 - Regular Labs Sourcerer before 16.0.0 processes {source} blocks found in Joomla’s final rendered HTML without reliably determining where that code originated.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • NetBox Device Type Library: Arbitrary Code Execution on CI Runner Through Malicious requirements.txt, .pre-commit-hooks-config.yaml, and .gitmodules FilesAlso CWE-94
  • Office-PowerPoint-MCP-Server through 2.0.7 Path Traversal via save_presentation and manage_imageSame generic ecosystem
  • Wormhole.app SSRFSame generic ecosystem
  • Physical UART Access Leading to an Unauthenticated Root Shell in TP-Link Kasa EC70 and EC71Same generic ecosystem
  • Out-of-bounds write in PeaZip PEA extractor allows code execution via a crafted .pea archiveSame generic ecosystem
  • Cadmos LTI exposure of sensitive information via debug modeSame generic ecosystem

Record context

Vulnerability class
RCE
EPSS
Not reported
CWE IDs
CWE-94
Source
CVE List V5
Source checked
Oct 2, 2026
References
1 linked source
Open source record