Medium
Hono - Timing Attack in basicAuth and bearerAuth Middleware
Type: advisorySources: OSV
Hono before 4.11.10 contains a timing attack vulnerability in the basicAuth and bearerAuth middlewares due to non-constant-time string comparison in the timingSafeEqual function. Attackers can exploit early termination of string equality checks to infer valid credentials through precise timing measurements.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-56764
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 16:11 UTC · Revision 1
Source evidence
Hono - Timing Attack in basicAuth and bearerAuth Middleware
core-osv · Original sourcePublished 15 Jul 2026, 11:25 UTC
Hono before 4.11.10 contains a timing attack vulnerability in the basicAuth and bearerAuth middlewares due to non-constant-time string comparison in the timingSafeEqual function. Attackers can exploit early termination of string equality checks to infer valid credentials through precise timing measurements.
osv:CVE-2026-56764
Complete source record
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"url": "https://osv.dev/vulnerability/CVE-2026-56764",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Hono - Timing Attack in basicAuth and bearerAuth Middleware",
"summary": "Hono before 4.11.10 contains a timing attack vulnerability in the basicAuth and bearerAuth middlewares due to non-constant-time string comparison in the timingSafeEqual function. Attackers can exploit early termination of string equality checks to infer valid credentials through precise timing measurements.",
"evidence": "osv:CVE-2026-56764",
"products": [],
"severity": "medium",
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"GHSA-gq3j-xvxp-8hrf"
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"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
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"modified": "2026-10-28T02:30:37.211145656Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56764.json",
"https://github.com/honojs/hono/security/advisories/GHSA-gq3j-xvxp-8hrf",
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],
"provider_metadata": {
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],
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}
},
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},
"source_id": "core-osv",
"document_id": 504509,
"published_at": "2026-07-15T11:25:32.814+00:00"
}