Inefficient Algorithmic Complexity Affecting hono package, versions >=4.12.0 <4.12.34
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-HONO-18593786
- published8 Aug 2026
- disclosed7 Aug 2026
- creditUnknown
Introduced: 7 Aug 2026
NewCVE-2026-71848 (opens in a new tab)How to fix?
Upgrade hono to version 4.12.34 or higher.
Overview
hono is an Ultrafast web framework for the Edges
Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity via the languageDetector middleware. An attacker can cause excessive CPU consumption and block unrelated requests by sending crafted language tags with a large number of hyphen-separated subtags.