---
id: "CVE-2026-111243"
page: "https://infrastack.ai/live/CVE-2026-111243"
kind: "vulnerability"
aliases: ["CVE-2026-111243"]
title: "MicroProfile JWT: negative clock skew setting disables token expiry checks"
severity: "medium"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["java", "jwt", "microprofile", "package"]
not_affected_if: ["default-config", "non-negative-clock-skew"]
published_at: "2026-11-10T16:17:15+00:00"
first_seen_at: "2026-11-10T16:22:32+00:00"
updated_at: "2026-11-10T16:24:20+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111243", "first_seen_at": "2026-11-10T16:22:32+00:00"}]
exploit_sources: []
---

# MicroProfile JWT: negative clock skew setting disables token expiry checks

Link for people: https://infrastack.ai/live/CVE-2026-111243 (this .md is for agents)

A negative clock skew value in MicroProfile JWT configuration is not rejected and turns off validation of token expiration and other time-based claims. An attacker holding an expired token can still authenticate with it.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Look for a MicroProfile JWT clock skew setting (mp.jwt.verify.clock.skew or the equivalent in your runtime) and check whether it is set to a negative value
- Identify the library or server version in use, for example with `mvn dependency:tree` and look for the MicroProfile JWT implementation

## Fix

- Upgrade to version `10.3.0` or `11.0.0-M2`, as stated in the description

## Timeline

- 2026-11-10T16:22:32+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-111243

## From the sources

A negative MicroProfile JWT clock skew setting is not rejected and disables validation of the token expiration and other time-based claims. In such configurations, an attacker in possession of an expired token can still authenticate with it. Users are recommended to upgrade to version 10.3.0 or 11.0.0-M2, which fix the issue.

---

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