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CVE-2026-66088

Unrestricted Command Execution via system.execute

CRITICAL
9.4
CVSS Score
Published: October 29, 2026 at 01:35 AM UTC
Updated: October 29, 2026 at 03:56 PM UTC
1 product affected across 1 vendoropenEQUELLA

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Severity
CRITICAL9.4
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

In openEQUELLA before 2026.1, the system.execute() function available to the scripting engine runs supplied operating system commands without validation or an allow-list of permitted executables. A user able to create or edit scripts can use it to execute arbitrary commands with the privileges of the openEQUELLA service account.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

openEQUELLA· Apereo
90%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory
Source: cverecord
https://github.com/openequella/openEQUELLA/security/advisories/GHSA-q8xp-w3fr-hj4v
Product
Source: cverecord
https://openequella.github.io/guides/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.4CRITICALMON-CSIRT
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-78CWE-749

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