Bug 2560634

Summary: CVE-2026-106071 nodejs26: nodejs: Permission model bypass via wildcard path matching flaw [fedora-rawhide]
Product: [Fedora] Fedora Reporter: Srikanth Balasubramanian <sbalasub>
Component: nodejs26Assignee: Jan Staněk <jstanek>
Status: NEW --- QA Contact:
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Version: rawhideCC: aradchen, jstanek, tjuhasz
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Whiteboard: {"flaws": ["e4187fa7-a1a3-4988-9728-d5484e6cae74"]}
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Bug Blocks: 2560018    

Description Srikanth Balasubramanian 2026-10-26 12:44:51 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A flaw in Node.js Permission Model filesystem enforcement can grant access to paths that do not match a wildcard `--allow-fs-read` or `--allow-fs-write` rule.

When the requested path is shorter than the prefix of a wildcard grant, the radix tree lookup stops comparing early and treats the path as a match. For example, `--allow-fs-read=/etc/passwd.*` also allows reading `/etc/passwd`. This requires the wildcard grant to sit directly under the root of the permission tree, for example when it is the only grant for that scope. This is a different root cause from CVE-2026-58043.

This vulnerability affects Node.js **26.x**.