Apache Answer 2.0.2 Auth Algorithm Flaw Bypasses Account Suspension
CVE-2026-86589 Published on October 19, 2026
Apache Answer: User Center integration does not revoke first-login sessions after central account suspension
Incorrect implementation of authentication algorithm vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.2.
A flaw in the User Center login integration can cause a newly created external user session to omit its external identity, allowing subsequent requests to bypass central account suspension or deletion checks until the session
expires or is revoked.
Users are recommended to upgrade to version 2.0.3, which fixes the issue.
Weakness Type
Incorrect Implementation of Authentication Algorithm
The requirements for the software dictate the use of an established authentication algorithm, but the implementation of the algorithm is incorrect. This incorrect implementation may allow authentication to be bypassed.
Products Associated with CVE-2026-86589
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Affected Versions
Apache Software Foundation Apache Answer:- Before and including 2.0.2 is affected.