Incorrect Regular Expression Affecting hono package, versions <4.11.7
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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- published28 Jan 2026
- disclosed27 Jan 2026
- creditDevansh Batham
Introduced: 27 Jan 2026
CVE-2026-24398 (opens in a new tab)How to fix?
Upgrade hono to version 4.11.7 or higher.
Overview
hono is an Ultrafast web framework for the Edges
Affected versions of this package are vulnerable to Incorrect Regular Expression in the form of the IPV4_REGEX pattern not properly matching IPv4 octet ranges, and passing values above 255 on to convertIPv4ToBinary. An attacker can gain unauthorized access or bypass IP-based restrictions by submitting malicious IP addresses, such as via the X-Forwarded-For header. Applications that rely on these values for access control decisions are vulnerable.