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Fencer Intel
medium 5.3

CVE-2026-85473 json

Out-of-Range Timestamp Claim Handling in auth0/java-jwt

published 29d ago modified 26d ago also EUVD-2026-100486 , GHSA-cg7w-5cc2-f2xm

Unreviewed: the maintainers' own advisory

Published by the maintainers on their GitHub repository auth0/java-jwt. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 25%
public exploits
0
none known

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. The condition occurs during token parsing, prior to signature verification. Repeated requests of this nature may lead to degraded availability of the affected service.

Patch / fix

  • Auth0 java-jwt 4.6.2

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-85473 updated cvss 5.3

com.auth0/java-jwt: auth0/java-jwt: Denial of Service via out-of-range timestamp claims

  • Red Hat build of Apache Camel 4 for Quarkus 3 java-jwt 4.5.0
    affected: no fix available
  • Red Hat Fuse 7 java-jwt 4.5.0
    affected: no fix planned “Out of support scope”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
26d ago

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

  • Auth0 java-jwt

Classification

Weakness
  • CWE-755 Improper Handling of Exceptional Conditions
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

The maintainers of auth0/java-jwt published their own advisory on GitHub. Reviewed sources take precedence over it.