CVE-2026-6410 | @fastify/static vulnerable to path traversal in directory listing

@fastify/static versions 8.0.0 through 9.1.0 allow path traversal when directory listing is enabled via the list option. The dirList.path() function resolves directories outside the configured static root using path.join() without a containment check. A remote unauthenticated attacker can obtain directory listings for arbitrary directories accessible to the Node.js process, disclosing directory and file names. File contents are not disclosed. Upgrade to @fastify/static 9.1.1 to fix this issue. As a workaround, disable directory listing by removing the list option from the plugin configuration.

Published: 2026-04-16 Last update: 2026-06-17 Assigner: ce714d77-add3-4f53-aff5-83d477b104bb Source: ce714d77-add3-4f53-aff5-83d477b104bb
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-6410 is rated Low Risk (35.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.51%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-6410

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.02% 0.51% +0.49%
2 2026-04-17 — 0.02% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-6410

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 ce714d77-add3-4f53-aff5-83d477b104bb

Weakness enumeration for CVE-2026-6410

GitHub Security Advisory for CVE-2026-6410

GHSA-pr96-94w5-mx2h · Severity: medium · Ecosystem: npm — @fastify/static vulnerable to path traversal in directory listing

OS Trackers for CVE-2026-6410

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2026-6410

Affected software / configurations for CVE-2026-6410

Vendor Product Version Raw CPE
fastify fastify-static >= 8.0.0, < 9.1.1 cpe:2.3:a:fastify:fastify-static:*:*:*:*:*:*:*:*

References for CVE-2026-6410

cvelogic Threat Intelligence