8.1

CVE-2025-62610: hono Improper Authorization

CVSS: 8.1v3.1HighAnalyzed
AliasesGHSA-m732-5p4w-x69gCGA-497c-gq4p-xp55CGA-4xfm-56xx-9vmw
Published 22-10-2025Last modified 23-10-2025
Open JSON

Vulnerability summary

CVE-2025-62610 is a high (CVSS 8.1) Improper Authorization vulnerability in hono. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 31% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
42/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.38%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-54MH-C6CQ-276X

Timeline

  1. 22-10-2025
    PublishedVulnerability first disclosed.
  2. 23-10-2025
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.38%

Chance of exploitation in the next 30 days

Percentile

31%

Versus all other CVEs

30-day change

+0.03 pp

From 0.36% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.38%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Hono

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Chainguard7 products
  • honoAll versions (No fix recorded)
  • hono-adapter-mqttAll versions (No fix recorded)
  • hono-cliAll versions (No fix recorded)
  • hono-compatAll versions (No fix recorded)
  • hono-service-authAll versions (No fix recorded)
Hono1 product
  • hono≥ 1.1.0, < 4.10.2
Honojs1 product
  • hono≥ 1.1.0, < 4.10.2
Npm1 product
  • hono≥ 1.1.0, < 4.10.2

4 vendors · 10 products

References

5 links