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CVE-2026-54286 Hono: Path traversal in `serve-static` on Windows via encoded backslash (`%5C`)

🗓️ 22 Jun 2026 17:14:40Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 12 Views

Hono before 4.12.25 on Windows allows path traversal via encoded backslash to read static files.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-54286
22 Jun 202617:14
attackerkb
Chainguard
CVE-2026-54286 vulnerabilities
17 Jun 202620:23
cgr
CVE
CVE-2026-54286
22 Jun 202617:14
cve
EUVD
EUVD-2026-38327
22 Jun 202617:14
euvd
Github Security Blog
hono: Path traversal in `serve-static` on Windows via encoded backslash (`%5C`)
16 Jun 202614:09
github
NVD
CVE-2026-54286
22 Jun 202618:16
nvd
OSV
CGA-RW78-F2MF-MH53
17 Jun 202615:20
osv
OSV
GHSA-WWFH-H76J-FC44 hono: Path traversal in `serve-static` on Windows via encoded backslash (`%5C`)
16 Jun 202614:09
osv
OSV
MINI-9WHP-HQM8-57FR
17 Jun 202616:23
osv
OSV
MINI-GFM8-X9G3-X74V
21 Jun 202621:54
osv
Rows per page
[
  {
    "vendor": "honojs",
    "product": "hono",
    "versions": [
      {
        "version": "< 4.12.25",
        "status": "affected"
      }
    ]
  }
]

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22 Jun 2026 17:14Current
CVSS 3.15.9
EPSS0.00098
12