CVE-2026-86253
- Source
- https://cve.org/CVERecord?id=CVE-2026-86253
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86253.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-86253
- Aliases
- Published
- 2026-09-06T12:00:28Z
- Modified
- 2026-09-12T03:31:01Z
- Severity
-
- 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- h3 before 1.15.6 Path Traversal via Percent-Encoded Dot Segments
- Details
-
h3 (npm package) versions <= 2.0.1-rc.14 contain a path traversal vulnerability in serveStatic(). On Node.js deployments, event.url.pathname is not normalized, so percent-encoded dot segments (%2e%2e) are passed to decodeURI() and decoded to ../ sequences without sanitization. An unauthenticated remote attacker can send crafted requests to endpoints served by serveStatic() to read arbitrary files outside the intended static directory. Fixed in 1.15.6 and 2.0.1-rc.15.
- Database specific
{ "cna_assigner": "VulnCheck", "cwe_ids": [ "CWE-22" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86253.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86253.json
- https://github.com/h3js/h3/security/advisories/GHSA-wr4h-v87w-p3r7
- https://nvd.nist.gov/vuln/detail/CVE-2026-86253
- https://www.vulncheck.com/advisories/h3-before-1.15.6-path-traversal-via-percent-encoded-dot-segments
Affected packages
Git / github.com/h3js/h3
Affected ranges
- Type
- GIT
- Repo
- https://github.com/h3js/h3
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedIntroducedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "introduced": "0" }, { "fixed": "1.15.6" }, { "introduced": "2.0.0-beta.0" }, { "fixed": "2.0.1-rc.15" } ], "source": "AFFECTED_FIELD" }
Affected versions
v0.*
v0.0.1
v0.0.10
v0.0.11
v0.0.12
v0.0.13
v0.0.14
v0.0.15
v0.0.2
v0.0.3
v0.0.4
v0.0.5
v0.0.6
v0.0.7
v0.0.8
v0.0.9
v0.2.0
v0.2.1
v0.2.10
v0.2.11
v0.2.12
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.2.6
v0.2.7
v0.2.8
v0.2.9
v0.3.0
v0.3.1
v0.3.2
v0.3.3
v0.3.4
v0.3.5
v0.3.6
v0.3.7
v0.3.8
v0.3.9
v0.4.0
v0.4.1
v0.4.2
v0.5.0
v0.5.1
v0.5.2
v0.5.3
v0.5.4
v0.5.5
v0.5.6
v0.5.7
v0.6.0
v0.7.0
v0.7.1
v0.7.10
v0.7.11
v0.7.12
v0.7.13
v0.7.14
v0.7.15
v0.7.16
v0.7.17
v0.7.18
v0.7.19
v0.7.2
v0.7.20
v0.7.21
v0.7.3
v0.7.4
v0.7.5
v0.7.6
v0.7.7
v0.7.8
v0.7.9
v0.8.0
v0.8.1
v0.8.2
v0.8.3
v0.8.4
v0.8.5
v0.8.6
v1.*
v1.0.0
v1.0.1
v1.0.2
v1.1.0
v1.10.0
v1.10.1
v1.10.2
v1.11.0
v1.11.1
v1.12.0
v1.13.0
v1.13.1
v1.14.0
v1.15.0
v1.15.1
v1.15.2
v1.15.4
v1.15.5
v1.2.0
v1.2.1
v1.3.0
v1.4.0
v1.5.0
v1.6.0
v1.6.1
v1.6.2
v1.6.3
v1.6.4
v1.6.5
v1.6.6
v1.7.0
v1.7.1
v1.8.0
v1.8.0-rc.0
v1.8.0-rc.1
v1.8.0-rc.2
v1.8.0-rc.3
v1.8.1
v1.8.2
v1.9.0
v2.*
v2.0.0-beta.0
v2.0.0-beta.1
v2.0.0-beta.2
v2.0.0-beta.3
v2.0.0-beta.4
v2.0.0-beta.5
v2.0.0-rc.1
v2.0.1-rc.10
v2.0.1-rc.11
v2.0.1-rc.12
v2.0.1-rc.13
v2.0.1-rc.14
v2.0.1-rc.2
v2.0.1-rc.3
v2.0.1-rc.4
v2.0.1-rc.5
v2.0.1-rc.6
v2.0.1-rc.7
v2.0.1-rc.8
v2.0.1-rc.9