CVE-2026-71563 PUBLISHED

Apache Answer: MCP Answer Retrieval Exposes Content from Non-Public Questions

Assigner: apache
Reserved: 07.08.2026 Published: 19.10.2026 Updated: 19.10.2026

Missing Authorization vulnerability in Apache Answer.

This issue affects Apache Answer: through 2.0.2.

An authorization flaw in the MCP answer retrieval tool allows holders of a global API key to access answer content associated with hidden, deleted, or pending-review questions.

Users are recommended to upgrade to version 2.0.3, which fixes the issue.

Product Status

Vendor Apache Software Foundation
Product Apache Answer
Versions Default: unaffected
  • affected from 0 to 2.0.2 (incl.)

Credits

  • Han, JunGyu reporter
  • VK, AzeFox Foundations reporter

References

Problem Types

  • CWE-862 Missing Authorization CWE