CVE-2026-45776 Open XDMoD has Broken Access Control via Client-Controlled Session Variable
Attackers can bypass access controls to view other users' compute job metrics if the optional SUPReMM module is enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-45776?
CVE-2026-45776 is a medium-severity missing authorization vulnerability in ubccr xdmod, published on 5 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-284
Which versions are affected by CVE-2026-45776?
It affects 1 product.
Products include Buffalo Open Xdmod.
How do I fix CVE-2026-45776?
No fix has been published for CVE-2026-45776 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-45776 being exploited?
There is no known exploitation of CVE-2026-45776 in the wild and no public exploit code.
Other vulnerabilities in ubccr xdmod
- CVE-2018-16988 Auth bypass in n/a
- CVE-2026-45777 Open XDMoD Vulnerable to Unauthenticated Remote Code Execution (RCE) via OS Command Injection
- CVE-2026-45779 Open XDMoD Vulnerable to Unauthenticated SQL Injection Leading to Full Database Compromise
- CVE-2026-45778 Open XDMoD Vulnerable to Reflected Cross-Site Scripting (XSS) in Password Reset
- CVE-2018-16961 Path traversal in n/a
Sources
Also known as GHSA-3hfh-m242-8rmh.