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

Quick assessment

Affected
Auth0 java-jwt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

auth0/java-jwt 库在接收到包含超出范围时间戳声明（exp、nbf、iat）的 JWT 令牌时，可能会终止线程。该问题发生在令牌解析阶段，且在签名验证之前。此类请求的反复发生可能导致受影响服务的可用性下降。

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-85473

Vulnerability Information
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Vulnerability Title
Out-of-Range Timestamp Claim Handling in auth0/java-jwt
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对异常条件的处理不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Auth0 java-jwt 4.0.0 ~ 4.6.2 -

II. Public POCs for CVE-2026-85473

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III. Intelligence Information for CVE-2026-85473

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Vendor Advisories for CVE-2026-85473 (2)

Same Patch Batch · Auth0 · 2026-10-13 · 4 CVEs total

CVE-2026-107369 6.1 MEDIUM Improper Validation of Post-Login Redirect URL in nextjs-auth0
CVE-2026-107371 5.4 MEDIUM Missing Verification of auth_time Claim in auth0.js
CVE-2026-107370 5.3 MEDIUM Improper Request Handling for Active Directory Logins in auth0-lock

IV. Related Vulnerabilities

Same vendor: Auth0
Same weakness: CWE-755

V. Comments for CVE-2026-85473

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