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.
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Wed, 30 Sep 2026 17:45:00 +0000

Type Values Removed Values Added
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.
Title Taskcluster: Unauthenticated remote code execution in `web-server` via GraphQL `filter` argument (sift `$where`)
Weaknesses CWE-20
CWE-250
CWE-306
CWE-94
CWE-95
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-30T19:12:22.456Z

Reserved: 2026-06-16T14:41:54.578Z

Link: CVE-2026-55094

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-30T18:18:37.387

Modified: 2026-09-30T18:18:37.387

Link: CVE-2026-55094

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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