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CVE-2026-88856

CRITICALCVSS 9.4/10EPSS 0.48%

Last modified

CVE-2026-88856 is a critical-severity vulnerability rated 9.4/10 on the CVSS scale. Joomla Extension - OrdaSoft.com - Authenticated, Privileged Remote Code Execution in OrdaSoft Joomla Gallery extension for Joomla < 6.2.7 - The extensions updateOSGallery(), reached via task=update_osgallery, read a JSON request body and called the value of a method field as a live PHP function, passing the value of a package field as its single argument, with no allow-list or is_callable() check of any kind. Any function name compatible with a single argument was directly reachable, including system, exec, shell_exec, and passthru.. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

Description

Joomla Extension - OrdaSoft.com - Authenticated, Privileged Remote Code Execution in OrdaSoft Joomla Gallery extension for Joomla < 6.2.7 - The extensions updateOSGallery(), reached via task=update_osgallery, read a JSON request body and called the value of a method field as a live PHP function, passing the value of a package field as its single argument, with no allow-list or is_callable() check of any kind. Any function name compatible with a single argument was directly reachable, including system, exec, shell_exec, and passthru.

Metrics

CVSS 4.0
9.4/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.48%

40.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
OrdaSoft.comOrdaSoft Joomla Gallery free extension for Joomla1.0.0-6.2.6
OrdaSoft.comOrdaSoft Joomla Gallery extension for Joomla1.0.0-6.2.6

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-88856?
Joomla Extension - OrdaSoft.com - Authenticated, Privileged Remote Code Execution in OrdaSoft Joomla Gallery extension for Joomla < 6.2.7 - The extensions updateOSGallery(), reached via task=update_osgallery, read a JSON request body and called the value of a method field as a live PHP function, passing the value of a package field as its single argument, with no allow-list or is_callable() check of any kind. Any function name compatible with a single argument was directly reachable, including system, exec, shell_exec, and passthru.
How severe is CVE-2026-88856?
CVE-2026-88856 has a CVSS score of 9.4/10 (CRITICAL severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.
How do I fix CVE-2026-88856?
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