CVE-2026-6321
fast-uri vulnerable to path traversal via percent-encoded dot segments
02 Description
fast-uri vulnerable to path traversal via percent-encoded dot segments
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.63% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 50.0% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-09-10.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-05-04 19:31Z5 MO AGO
- Last updated
- 2026-09-10 12:04Z1 MO AGO
- Reserved
- 2026-04-14
- Assigning CNA
- openjs
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Weaknesses
- CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
- Data version
- 5.2
- Document digest
- 6676895e3c62dc16bf4ca74721bd0d82ffcfe158e8c74e355fde47e623b239a6
05 Affected products
06 References
- github.comhttps://github.com/fastify/fast-uri/security/advisories/GHSA-q3j6-qgpj-74h6
- cna.openjsf.orghttps://cna.openjsf.org/security-advisories.html
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-6321
- bugzilla.redhat.comRHBZ#2466582https://bugzilla.redhat.com/show_bug.cgi?id=2466582
- security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6321.json
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:42078
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:42079
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:34342
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:37385
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:25089
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:24473
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:24766
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:24866
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:21338
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:26234
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:20338
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:24977
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:25123
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:26416
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:56431
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:26420
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:56366
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19238
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:57013
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:56928
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:26214
07 Fixed in
Debian 12
- node-ajv No fix yet
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- node-ajv No fix yet
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- node-ajv Fixed in 8.20.0~ds+~cs6.1.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- node-ajv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- node-ajv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- node-ajv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- node-ajv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 25.10
- node-ajv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.04 LTS
- node-ajv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.10
- node-ajv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.