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Findings

CVE-2026-73373

[20260810] - Core - Unrestricted uploads of SHTML files

Published Aug 17, 2026 · Joomla Joomla

Project: Joomla! SubProject: CMS Impact: High Severity: Low Probability: Low Versions: 1.0.0-5.4.7,6.0.0-6.1.2 Exploit type: Unrestricted Upload of File with Dangerous Type Reported Date: 2026-07-29 Fixed Date: 2026-08-18 CVE Number: CVE-2026-73373 Description The default list of dangerous files did not include SHTML files. On servers that executed these files, that could lead to code execution. Affected Installs Joomla! CMS versions 1.0.0-5.4.7, 6.0.0-6.1.2 Solution Upgrade to version 5.4.8, 6.1.3 Contact The JSST at the Joomla! Security Centre . Reported By: Valentin Lobstein (Chocapikk)

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 17, 2026 · Joomla Security

    Detected

    Project: Joomla! SubProject: CMS Impact: High Severity: Low Probability: Low Versions: 1.0.0-5.4.7,6.0.0-6.1.2 Exploit type: Unrestricted Upload of File with Dangerous Type Reported Date: 2026-07-29 Fixed Date: 2026-08-18 CVE Number: CVE-2026-73373 Description The default list of dangerous files did not include SHTML files. On servers that executed these files, that could lead to code execution. A

Sources

  • CVE.orgVulnerability recordCVE-2026-73373

    Official CVE identifier

    cve.org
  • Joomla SecurityVendor advisoryCVE-2026-73373

    Project: Joomla! SubProject: CMS Impact: High Severity: Low Probability: Low Versions: 1.0.0-5.4.7,6.0.0-6.1.2 Exploit type: Unrestricted Upload of File with Dangerous Type Reported Date: 2026-07-29 Fixed Date: 2026-08-18 CVE Number: CVE-2026-73373 Description The default list of

    developer.joomla.org