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.
https://thehackernews.com/2026/01/critical-nodejs-vulnerability-can-cause.html
https://nodejs.org/en/blog/vulnerability/december-2025-security-releases
https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-55130.json
https://bugzilla.redhat.com/show_bug.cgi?id=2431352
https://access.redhat.com/security/cve/CVE-2025-55130
https://access.redhat.com/errata/RHSA-2026:7387
https://access.redhat.com/errata/RHSA-2026:7386
https://access.redhat.com/errata/RHSA-2026:6431
https://access.redhat.com/errata/RHSA-2026:6402
https://access.redhat.com/errata/RHSA-2026:2899
https://access.redhat.com/errata/RHSA-2026:2864
https://access.redhat.com/errata/RHSA-2026:2783
https://access.redhat.com/errata/RHSA-2026:2782
https://access.redhat.com/errata/RHSA-2026:2781
https://access.redhat.com/errata/RHSA-2026:2768
https://access.redhat.com/errata/RHSA-2026:2767
https://access.redhat.com/errata/RHSA-2026:2422
https://access.redhat.com/errata/RHSA-2026:2421
https://access.redhat.com/errata/RHSA-2026:2420