CVE-2026-6321
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
7.5
Description
fast-uri vulnerable to path traversal via percent-encoded dot segments
Predictions
Exploit likelihood
83%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | affected | |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 8.20.0~ds+~cs6.1.3-1 |
| debian | sid | fixed | 8.20.0~ds+~cs6.1.3-1 |
| debian | trixie | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| openjsf | fast-uri | {"endExcluding":"3.1.1"} | 3.1.1 |
References
- https://cna.openjsf.org/security-advisories.html
- https://github.com/fastify/fast-uri/security/advisories/GHSA-q3j6-qgpj-74h6
- https://nvd.nist.gov/vuln/detail/CVE-2026-6321
- https://github.com/fastify/fast-uri
- https://www.suse.com/security/cve/CVE-2026-6321.html
- https://security-tracker.debian.org/tracker/CVE-2026-6321
- https://github.com/advisories/GHSA-q3j6-qgpj-74h6
CWEs
CWE-22
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.