CVE-2026-85473: Out-of-Range Timestamp Claim Handling in auth0/java-jwt

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-13 · updated 2026-10-16
Weakness: CWE-20

Description

The auth0/java-jwt library may terminate a thread if it receives a JWT with a timestamp claim (exp, nbf, iat) containing an out-of-range value. The condition occurs during token parsing, prior to signature verification. Repeated requests of this nature may lead to degraded availability of the affected service.

Affected products

Auth0 java-jwt: from 4.0.0 before 4.6.2 — fixed in 4.6.2

How to fix

Upgrade to a fixed version: Auth0 java-jwt 4.6.2. Check the vendor advisory for mitigations.

References

https://github.com/auth0/java-jwt/security/advisories/GHSA-cg7w-5cc2-f2xm
https://trust.okta.com/security-advisories/out-of-range-timestamp-claim-handling-in-auth0-java-jwt-cve-2026-85473

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