Medium
Hono CSRF middleware can be bypassed using crafted Content-Type header
Type: advisorySources: OSV
Hono is a Web application framework that provides support for any JavaScript runtime. Hono CSRF middleware can be bypassed using crafted Content-Type header. MIME types are case insensitive, but isRequestedByFormElementRe only matches lower-case. As a result, attacker can bypass csrf middleware using upper-case form-like MIME type. This vulnerability is fixed in 4.5.8.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2024-43787
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 16:21 UTC · Revision 1
Source evidence
Hono CSRF middleware can be bypassed using crafted Content-Type header
core-osv · Original sourcePublished 22 Aug 2024, 14:23 UTC
Hono is a Web application framework that provides support for any JavaScript runtime. Hono CSRF middleware can be bypassed using crafted Content-Type header. MIME types are case insensitive, but isRequestedByFormElementRe only matches lower-case. As a result, attacker can bypass csrf middleware using upper-case form-like MIME type. This vulnerability is fixed in 4.5.8.
osv:CVE-2024-43787
Complete source record
{
"id": "ee9d78d5c18f6478751eec3f8af2ff9b0e5df31bb58afb6cb749ea729cdec451",
"url": "https://osv.dev/vulnerability/CVE-2024-43787",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Hono CSRF middleware can be bypassed using crafted Content-Type header",
"summary": "Hono is a Web application framework that provides support for any JavaScript runtime. Hono CSRF middleware can be bypassed using crafted Content-Type header. MIME types are case insensitive, but isRequestedByFormElementRe only matches lower-case. As a result, attacker can bypass csrf middleware using upper-case form-like MIME type. This vulnerability is fixed in 4.5.8.",
"evidence": "osv:CVE-2024-43787",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2024-43787",
"aliases": [
"CVE-2024-43787",
"GHSA-rpfr-3m35-5vx5"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/honojs/hono",
"type": "GIT",
"events": [
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},
{
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{
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}
],
"database_specific": {
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{
"cpe": "cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*",
"range": [
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{
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"source": "CPE_RANGE"
},
{
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"source": "REFERENCES_COMMIT"
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"database_specific": {
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}
}
],
"modified": "2026-10-28T02:30:37.235542063Z",
"provider": "osv",
"references": [
"https://github.com/honojs/hono/blob/b0af71fbcc6dbe44140ea76f16d68dfdb32a99a0/src/middleware/csrf/index.ts#L16-L17",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/43xxx/CVE-2024-43787.json",
"https://github.com/honojs/hono/security/advisories/GHSA-rpfr-3m35-5vx5",
"https://nvd.nist.gov/vuln/detail/CVE-2024-43787",
"https://github.com/honojs/hono/commit/41ce840379516410dee60c783142e05bb5a22449"
],
"provider_metadata": {
"cwe_ids": [
"CWE-352"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/43xxx/CVE-2024-43787.json"
}
},
"related_cves": [
{
"value": "CVE-2024-43787",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 504636,
"published_at": "2024-08-22T14:23:44.025+00:00"
}