What’s Vulnerable › Vulnerabilities

CVE-2026-45776: Open XDMoD has Broken Access Control via Client-Controlled Session Variable

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-05 · updated 2026-07-23
• Weakness: CWE-284

Description

OpenXDMoD is an open framework for collecting and analyzing HPC metrics. Prior to version 11.0.3, a flaw in Open XDMoD's access control logic allows an attacker to submit a crafted HTTPS POST request that sets a session variable used for authorization decisions. If an installation of Open XDMoD includes the optional Job Performance (SUPReMM) module, an attacker could bypass intended data access restrictions and view other users' compute job efficiency metrics. All deployments of Open XDMoD prior to version 11.0.3 that contain the optional Job Performance (SUPReMM) module are impacted. This issue was reported privately on 2026-04-06, and at this time there is no evidence that this vulnerability has been exploited in the wild. The vulnerability was patched in Open XDMoD 11.0.3 on 2026-05-12. As a workaround, apply the patch manually.

Affected products

• ubccr xdmod: before 11.0.3 — fixed in 11.0.3

How to fix

Upgrade to a fixed version: ubccr xdmod 11.0.3. Check the vendor advisory for mitigations.

References

• https://github.com/ubccr/xdmod/releases/tag/v11.0.3-2
• https://github.com/ubccr/xdmod/security/advisories/GHSA-3hfh-m242-8rmh
• https://open.xdmod.org/security_patches/GHSA-3hfh-m242-8rmh-0_0_0-11_0_2.patch

Get alerted when CVE-2026-45776 or the next vulnerability affects your stack