CVE-2026-23901: Apache Shiro Affected by an Observable Timing Discrepancy Vulnerability

CVE-2026-23901 · Severity: medium · CVSS 4 · Published 2026-02-10

Apache Shiro Affected by an Observable Timing Discrepancy Vulnerability

Technologies: org.apache.shiro:shiro-core (Maven). Vendors: Maven.

Quick answers

Is CVE-2026-23901 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-23901 being exploited in the wild.
How severe is CVE-2026-23901?
Medium severity, with a CVSS score of 4, published 10 February 2026.
Which products and versions are affected?
org.apache.shiro:shiro-core (Maven) ECOSYSTEM:introduced=0,fixed=2.1.0.
Is there a fix for CVE-2026-23901?
Yes. org.apache.shiro:shiro-core (Maven): upgrade to 2.1.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-23901?
Check whether you run org.apache.shiro:shiro-core (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • org.apache.shiro:shiro-core (Maven): upgrade to 2.1.0 or later
    # set org.apache.shiro:shiro-core to 2.1.0 in your pom.xml or build.gradle

Affected products

  • org.apache.shiro:shiro-core (Maven) ECOSYSTEM:introduced=0,fixed=2.1.0

Identifiers

  • CVE-2026-23901
  • GHSA-c4qc-4q9p-m9q9

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