Medium
Hono: Unvalidated JSX Tag Names in hono/jsx May Allow HTML Injection
Type: advisorySources: OSV
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.16, Improper handling of JSX element tag names in hono/jsx allowed unvalidated tag names to be directly inserted into the generated HTML output. When untrusted input is used as a tag name via the programmatic jsx() or createElement() APIs during server-side rendering, specially crafted values may break out of the intended element context and inject unintended HTML. This vulnerability is fixed in 4.12.16.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-44455
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 12:09 UTC · Revision 1
Source evidence
Hono: Unvalidated JSX Tag Names in hono/jsx May Allow HTML Injection
core-osv · Original sourcePublished 13 May 2026, 14:57 UTC
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.16, Improper handling of JSX element tag names in hono/jsx allowed unvalidated tag names to be directly inserted into the generated HTML output. When untrusted input is used as a tag name via the programmatic jsx() or createElement() APIs during server-side rendering, specially crafted values may break out of the intended element context and inject unintended HTML. This vulnerability is fixed in 4.12.16.
osv:CVE-2026-44455
Complete source record
{
"id": "928c710c1974680d989d471c7c44be723ed3f7bdf8c091c7688a71919e0dd48a",
"url": "https://osv.dev/vulnerability/CVE-2026-44455",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Hono: Unvalidated JSX Tag Names in hono/jsx May Allow HTML Injection",
"summary": "Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.16, Improper handling of JSX element tag names in hono/jsx allowed unvalidated tag names to be directly inserted into the generated HTML output. When untrusted input is used as a tag name via the programmatic jsx() or createElement() APIs during server-side rendering, specially crafted values may break out of the intended element context and inject unintended HTML. This vulnerability is fixed in 4.12.16.",
"evidence": "osv:CVE-2026-44455",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-44455",
"aliases": [
"CVE-2026-44455",
"GHSA-69xw-7hcm-h432"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/honojs/hono",
"type": "GIT",
"events": [
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},
{
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"database_specific": {
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{
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"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
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{
"cpe": "cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*",
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"modified": "2026-10-28T02:30:28.569968433Z",
"provider": "osv",
"references": [
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"https://github.com/honojs/hono/security/advisories/GHSA-69xw-7hcm-h432",
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"evidence": "/id"
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},
"source_id": "core-osv",
"document_id": 495266,
"published_at": "2026-05-13T14:57:05.865+00:00"
}