fast-uri vulnerable to path traversal via percent-encoded dot segments (fast-uri fast-uri)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.63 % · percentile 50 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- openjs
- NVD status
- Modified
Description
fast-uri decoded percent-encoded path separators and dot segments before applying dot-segment removal in its normalize() and equal() functions. Encoded path data was treated like real slashes and parent-directory references, so distinct URIs could collapse onto the same normalized path. Applications that normalize or compare attacker-controlled URLs to enforce path-based policy can be bypassed, with a path that appears confined under an allowed prefix normalizing to a different location. Versions <= 3.1.0 are affected. Update to 3.1.1 or later.
Weaknesses (CWE)
- CWE-22 — Improper Limitation of a Pathname to a Restricted Directory
References
- https://github.com/fastify/fast-uri/security/advisories/GHSA-q3j6-qgpj-74h6
- https://cna.openjsf.org/security-advisories.html
- https://access.redhat.com/security/cve/CVE-2026-6321
- https://bugzilla.redhat.com/show_bug.cgi?id=2466582
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6321.json
- https://access.redhat.com/errata/RHSA-2026:42078
- https://access.redhat.com/errata/RHSA-2026:42079
- https://access.redhat.com/errata/RHSA-2026:34342
- https://access.redhat.com/errata/RHSA-2026:37385
- https://access.redhat.com/errata/RHSA-2026:25089
- https://access.redhat.com/errata/RHSA-2026:24473
- https://access.redhat.com/errata/RHSA-2026:24766
- https://access.redhat.com/errata/RHSA-2026:24866
- https://access.redhat.com/errata/RHSA-2026:21338
- https://access.redhat.com/errata/RHSA-2026:26234
- https://access.redhat.com/errata/RHSA-2026:20338
- https://access.redhat.com/errata/RHSA-2026:24977
- https://access.redhat.com/errata/RHSA-2026:25123
- https://access.redhat.com/errata/RHSA-2026:26416
- https://access.redhat.com/errata/RHSA-2026:56431
- https://access.redhat.com/errata/RHSA-2026:26420
- https://access.redhat.com/errata/RHSA-2026:56366
- https://access.redhat.com/errata/RHSA-2026:19238
- https://access.redhat.com/errata/RHSA-2026:57013
- https://access.redhat.com/errata/RHSA-2026:56928
- https://access.redhat.com/errata/RHSA-2026:26214
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N | openjs |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N | redhat-SADP |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N | NVD · ce714d77-add3-4f53-aff5-83d477b104bb (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
Advisories
- GHSA-q3j6-qgpj-74h6 — fast-uri vulnerable to path traversal via percent-encoded dot segments
European references
- ENISA EUVD · EUVD-2026-27129
- GCVE · GCVE-0-2026-6321
CERT-FR advisories
- CERTFR-2026-AVI-1366 — Multiples vulnérabilités dans les produits Splunk · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1256 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1165 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1094 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0934 — Multiples vulnérabilités dans les produits Atlassian · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0901 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:openjsf:fast-uri:*:*:*:*:*:node.js:*:*< 3.1.1
Affected products
| Product | Versions |
|---|---|
| fast-uri · fast-uri | affected 0 < 3.1.1 ; unaffected 3.1.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |