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CVE-2026-55094.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSHIGH / 8.7CVSS 4.0 · security-advisories@github.com
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSDeferredModified Sep 30, 2026

Disclosure summary

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.

Source-reported weakness categories

CWE-20, CWE-94, CWE-95, CWE-250, CWE-306

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

NIST National Vulnerability Database · NVD-CVE-2026-55094

Open original source · Updated Sep 30, 2026

Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.

Original records & references

PUBLISHED 2026-09-30T14:18:37-04:00
MODIFIED 2026-09-30T16:17:32-04:00
INGESTED 2026-10-06T11:44:59-04:00