CVE-2026-85473 Auth0 CVE debrief

Who should care

Defenders responsible for the auth0/java-jwt library and systems using this library should assess exposure and prioritize verification of the library version in use. Defenders should verify the version of the auth0/java-jwt library in use and check for out-of-range timestamp claims in JWTs to prevent potential degraded availability of the affected service. Operators, platform administrators, vulnerability management teams, and security teams may be impact.

Why it matters

Defenders should prioritize verifying the version of the auth0/java-jwt library in use and checking for out-of-range timestamp claims in JWTs to prevent potential degraded availability of the affected service.

• Degraded availability of the affected service due to repeated requests with out-of-range timestamp claims

Technical summary

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. This condition occurs during token parsing, prior to signature verification. The CVE Program record and NVD vulnerability detail provide information on the vulnerability. Defenders should assess exposure and prioritize verification of the library version in use. Repeated requests of this nature may lead to degraded availability of the affected service. Defenders should verify the version of the auth0/java-jwt library in use and check for out-of-range timestamp claims in JWTs.

Defensive priority

Defenders should prioritize verifying the version of the auth0/java-jwt library in use and checking for out-of-range timestamp claims in JWTs.

Recommended defensive actions

• Verify the version of the auth0/java-jwt library in use
• Check for out-of-range timestamp claims in JWTs
• Consider upgrading to version 4.6.2 or later of the auth0/java-jwt library
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed

Evidence notes

The CVE Program record and NVD vulnerability detail provide information on the vulnerability. The auth0/java-jwt library is affected by this vulnerability, and version 4.6.2 or later is recommended. Defenders should verify the version of the auth0/java-jwt library in use and check for out-of-range timestamp claims in JWTs to prevent potential degraded availability of the affected service.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.