CVE-2025-55130
CRITICAL severity · CVSS 9.1 · CWE-289
9.1CVSS CRITICAL
Summary
A flaw in Node.js’s Permissions model allows attackers to bypass `--allow-fs-read` and `--allow-fs-write` restrictions using crafted relative symlink paths. By chaining directories and symlinks, a script granted access only to the current directory can escape the allowed path and read sensitive files. This breaks the expected isolation guarantees and enables arbitrary file read/write, leading to potential system compromise. This vulnerability affects users of the permission model on Node.js v20, v22, v24, and v25.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactNone
Exploit probability (EPSS)2%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://nodejs.org/en/blog/vulnerability/december-2025-security-releasesAdvisory
- https://access.redhat.com/errata/RHSA-2026:1842
- https://access.redhat.com/errata/RHSA-2026:1843
- https://access.redhat.com/errata/RHSA-2026:2420
- https://access.redhat.com/errata/RHSA-2026:2421
- https://access.redhat.com/errata/RHSA-2026:2422
- https://access.redhat.com/errata/RHSA-2026:2767
- https://access.redhat.com/errata/RHSA-2026:2768