CVE-2026-73373

CRITICALCVSS 9.8/10EPSS 0.65%

Last modified

CVE-2026-73373 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Joomla! Core - [20260810] - Unrestricted uploads of SHTML files in Joomla 1.0.0-5.4.7, 6.0.0-6.1.2 - The default list of dangerous files did not include SHTML files. On servers that executed these files, that could lead to code execution.. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

Joomla! Core - [20260810] - Unrestricted uploads of SHTML files in Joomla 1.0.0-5.4.7, 6.0.0-6.1.2 - The default list of dangerous files did not include SHTML files. On servers that executed these files, that could lead to code execution.

Metrics

Weakness Enumeration

Affected Software

VendorProductVersions
JoomlaJoomla\!>= 1.0.0, < 5.4.8
JoomlaJoomla\!>= 6.0.0, < 6.1.3

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-73373?
Joomla! Core - [20260810] - Unrestricted uploads of SHTML files in Joomla 1.0.0-5.4.7, 6.0.0-6.1.2 - The default list of dangerous files did not include SHTML files. On servers that executed these files, that could lead to code execution.
How severe is CVE-2026-73373?
CVE-2026-73373 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.
How do I fix CVE-2026-73373?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST