CVE-2026-55094
Taskcluster is the task execution framework that supports Mozilla's continuous integration and…
- Risk score
- 64/100
- CVSS
- 8.7 v4.0
- Exploit chance (30 days)
- 0.4%
- Published
- 30 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Taskcluster is the task execution framework that supports Mozilla's continuous integration and release processes. Prior to version 100.3.0, Taskcluster is vulnerable to unauthenticated RCE on Taskcluster deployments with an anonymous role that exposes the GraphQL endpoint and parses filter arguments using the sift lib…
- Affected
- See advisory
- Fix
- Upgrade the product to 100.3.0 or later.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 8.7 high
- Remotely exploitable without logging in
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2045091
- https://github.com/taskcluster/taskcluster/commit/a1b0154b8235937657c2ded127f193b564e2334b
- https://github.com/taskcluster/taskcluster/issues/8716
- https://github.com/taskcluster/taskcluster/pull/8718
- https://github.com/taskcluster/taskcluster/releases/tag/v100.3.0
- https://github.com/taskcluster/taskcluster/security/advisories/GHSA-ccv5-c45x-2q38
Original description
Taskcluster is the task execution framework that supports Mozilla's continuous integration and release processes. Prior to version 100.3.0, Taskcluster is vulnerable to unauthenticated RCE on Taskcluster deployments with an anonymous role that exposes the GraphQL endpoint and parses filter arguments using the sift library. This issue has been patched in version 100.3.0.
Last activity 30 Sep 2026. Patch Forecast updates every hour.