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Advisory severityMediumApache Software Foundation Updated

Medium [CVE-2026-123766] Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) vulnerability in the OpenAPI module of Apache Axis2/Java

This medium-severity Apache Software Foundation advisory covers CVE-2026-123766 affecting Apache Axis2.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-123766 Source published Source updated

VulniPulse record published Record updated

CVE-2026-123766
Affected products & platforms
Apache Software FoundationUnclassified
Open source advisory

Summary

Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) vulnerability in the OpenAPI module of Apache Axis2/Java. The Swagger UI page served by the OpenAPI module wrote a value derived from the request's Host header into the page without encoding, allowing script injection in the context of the Axis2 origin.

This issue affects Apache Axis2/Java: 2.0.1. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

Is CVE-2026-123766 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-123766 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-123766?

Upgrade to a fixed release named by Apache:

  • 2.0.2

Confirm against the vendor advisory before you patch.

Affected versions
  • 2.0.1

Official advisory · high-confidence parse· fetched 1 day ago·verify at source

Fixed versions
  • 2.0.2

Official advisory · high-confidence parse· fetched 1 day ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Users are recommended to upgrade to version 2.0.2, which fixes the issue.

Official advisory · high-confidence parse· fetched 1 day ago·verify at source

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