Vulnerability/
https://seclists.org/oss-sec/2026/q4/202

https://seclists.org/oss-sec/2026/q4/202: CVE-2026-71563: Apache Answer: MCP Answer trieval Exposes Content from Non-Public Questions

Q: Who can exploit this issue?

An attacker needs to hold a global API key. The affected MCP answer retrieval tool can then be used to access answer content tied to hidden, deleted, or pending-review questions.

Q: Which deployments are affected?

Apache Answer versions through 2.0.2 are affected. The issue is fixed in version 2.0.3.

Q: What should teams do if they use global API keys?

Upgrade Apache Answer to version 2.0.3. Because global API key holders can access content from non-public question states, review who has been issued those keys and restrict or rotate them as appropriate.

Published Oct 16, 2026

Updated

Affected Software

1 affected component

Apache Answer<=2.0.2

Frequently Asked Questions

Who can exploit this issue?

An attacker needs to hold a global API key. The affected MCP answer retrieval tool can then be used to access answer content tied to hidden, deleted, or pending-review questions.

Which deployments are affected?

Apache Answer versions through 2.0.2 are affected. The issue is fixed in version 2.0.3.

What should teams do if they use global API keys?

Upgrade Apache Answer to version 2.0.3. Because global API key holders can access content from non-public question states, review who has been issued those keys and restrict or rotate them as appropriate.

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