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Fencer Vulns
medium 5.3

CVE-2026-85473 json

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

published 2026-10-13 26 d ago modified 2026-10-16 23 d ago also EUVD-2026-100486

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 24%
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

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
23 d ago

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

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 Vulns 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.