Cross-service access via missing JWT audience validation
Published Oct 22, 2025 · Updated Oct 22, 2025
Improper authorization in Hono 1.1.0 through 4.10.1 allows remote attackers to access APIs with JWTs issued for another audience. The JWT authentication middleware's verifyOptions omit aud, so verification accepts a correctly signed token without confirming that its audience identifies the receiving API. The issue is reachable when services share an issuer or keys and use audience claims to separate authorization boundaries, enabling unintended cross-service endpoint access.
Summary
What happened
Improper authorization in Hono 1.1.0 through 4.10.1 allows remote attackers to access APIs with JWTs issued for another audience. The JWT authentication middleware's verifyOptions omit aud, so verification accepts a correctly signed token without confirming that its audience identifies the receiving API. The issue is reachable when services share an issuer or keys and use audience claims to separate authorization boundaries, enabling unintended cross-service endpoint access.
The record
- CVE
- CVE-2025-62610
- Published
- Oct 22, 2025
- Updated
- Oct 22, 2025
- Vendor
- Hono
- Product
- Hono
- Classifications
- CWE-285, T1550.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 22, 2025CVE publishedPublication date reported by the CVE source.
- Oct 22, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=>= 1.1.0, < 4.10.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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