CVE-2026-126356
- Source
- https://cve.org/CVERecord?id=CVE-2026-126356
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126356.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-126356
- Aliases
- Downstream
- Published
- 2026-11-12T22:16:37Z
- Modified
- 2026-11-13T10:46:23Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
- Summary
- Hono: `validator('form')` skips validation for `multipart/form-data` requests with extra parameters
- Details
-
Hono is a Web application framework that provides support for any JavaScript runtime. From 4.5.1 until 4.13.16, validator('form') uses a strict whole-header pattern that fails to recognize multipart/form-data when its Content-Type includes another legal parameter or extra whitespace after a semicolon. The validation callback receives an empty object even though c.req.parseBody() or c.req.formData() can still parse and expose all submitted fields to the handler. An unauthenticated client can therefore bypass allow-list or required-field checks when the application relies on the form validator and its callback accepts an empty object. application/x-www-form-urlencoded requests are not affected. This issue is fixed in version 4.13.16.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-1471", "CWE-20" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126356.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126356.json
- https://github.com/honojs/hono/commit/d88fab372415277a9e540e895650943dd08eef4a
- https://github.com/honojs/hono/releases/tag/v4.13.16
- https://github.com/honojs/hono/security/advisories/GHSA-4h7h-rv7c-7m2v
- https://nvd.nist.gov/vuln/detail/CVE-2026-126356
Affected packages
Git / github.com/honojs/hono
Affected ranges
- Type
- GIT
- Repo
- https://github.com/honojs/hono
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "4.5.1" }, { "fixed": "4.13.16" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "d88fab372415277a9e540e895650943dd08eef4a" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v4.13.16", "range": [ { "fixed": "c91b60a251186fb024557c6d55a11d8e388f179c" } ], "source": "REFERENCES_TAG" } ] }
Affected versions
@hono/aws-lambda@1.*
@hono/aws-lambda@1.0.1
@hono/bun@1.*
@hono/bun@1.0.1
@hono/cloudflare-workers@1.*
@hono/cloudflare-workers@1.0.1
@hono/deno@1.*
@hono/deno@1.0.1
@hono/deno@1.0.2
@hono/deno@1.0.3
@hono/lambda-edge@1.*
@hono/lambda-edge@1.0.1
@hono/netlify@1.*
@hono/netlify@1.0.1
@hono/netlify@1.0.2
@hono/service-worker@1.*
@hono/service-worker@1.0.1
@hono/vercel@1.*
@hono/vercel@1.0.1
v4.*
v4.10.0
v4.10.1
v4.10.2
v4.10.3
v4.10.4
v4.10.5
v4.10.6
v4.10.7
v4.10.8
v4.11.0
v4.11.1
v4.11.10
v4.11.2
v4.11.3
v4.11.4
v4.11.5
v4.11.6
v4.11.7
v4.11.8
v4.11.9
v4.12.0
v4.12.1
v4.12.10
v4.12.11
v4.12.12
v4.12.13
v4.12.14
v4.12.15
v4.12.16
v4.12.17
v4.12.18
v4.12.19
v4.12.2
v4.12.20
v4.12.21
v4.12.22
v4.12.23
v4.12.24
v4.12.25
v4.12.26
v4.12.27
v4.12.28
v4.12.29
v4.12.3
v4.12.30
v4.12.31
v4.12.32
v4.12.33
v4.12.34
v4.12.4
v4.12.5
v4.12.6
v4.12.7
v4.12.8
v4.12.9
v4.13.0
v4.13.1
v4.13.10
v4.13.11
v4.13.12
v4.13.13
v4.13.14
v4.13.15
v4.13.2
v4.13.3
v4.13.4
v4.13.5
v4.13.6
v4.13.7
v4.13.8
v4.13.9
v4.5.1
v4.5.10
v4.5.11
v4.5.2
v4.5.3
v4.5.4
v4.5.5
v4.5.6
v4.5.7
v4.5.8
v4.5.9
v4.6.0
v4.6.1
v4.6.10
v4.6.11
v4.6.12
v4.6.13
v4.6.14
v4.6.15
v4.6.16
v4.6.17
v4.6.18
v4.6.19
v4.6.2
v4.6.20
v4.6.3
v4.6.4
v4.6.5
v4.6.6
v4.6.7
v4.6.8
v4.6.9
v4.7.0
v4.7.1
v4.7.10
v4.7.11
v4.7.2
v4.7.3
v4.7.4
v4.7.5
v4.7.6
v4.7.7
v4.7.8
v4.7.9
v4.8.0
v4.8.1
v4.8.10
v4.8.11
v4.8.12
v4.8.2
v4.8.3
v4.8.4
v4.8.5
v4.8.6
v4.8.7
v4.8.8
v4.8.9
v4.9.0
v4.9.1
v4.9.10
v4.9.11
v4.9.12
v4.9.2
v4.9.3
v4.9.4
v4.9.5
v4.9.6
v4.9.7
v4.9.8
v4.9.9