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CVE-2025-62610

Hono broken access control

8.1 HIGHPublic exploitEPSS 0.38%
  1. Published22 Oct 2025

Description

Hono is a Web application framework that provides support for any JavaScript runtime. In versions from 1.1.0 to before 4.10.2, Hono’s JWT Auth Middleware does not provide a built-in aud (Audience) verification option, which can cause confused-deputy / token-mix-up issues: an API may accept a valid token that was issued for a different audience (e.g., another service) when multiple services share the same issuer/keys. This can lead to unintended cross-service access. Hono’s docs list verification options for iss/nbf/iat/exp only, with no aud support; RFC 7519 requires that when an aud claim is present, tokens MUST be rejected unless the processing party identifies itself in that claim. This issue has been patched in version 4.10.2.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Affected products

Hono≥ 1.1.0 < 4.10.2

Remediation

Fixed in
Hono≥ 4.10.2

References

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Frequently asked

Is CVE-2025-62610 being actively exploited?

CVE-2025-62610 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.38%.

How severe is CVE-2025-62610?

CVE-2025-62610 has a CVSS 3.1 base score of 8.1, rated high. EPSS estimates a 0.38% probability of exploitation.

Which products are affected by CVE-2025-62610?

Affected products include Hono.

How do I fix CVE-2025-62610?

Upgrade affected software to a fixed version, for example Hono 4.10.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.