CVE-2026-86589 Apache Answer: User Center integration does not revoke first-login sessions after central account suspension
Attackers can bypass central account suspension checks by exploiting a session identity flaw in Apache Answer's User Center integration.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86589?
CVE-2026-86589 is an authentication bypass vulnerability in Apache Answer, published on 19 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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: CWE-303
Which versions are affected by CVE-2026-86589?
How do I fix CVE-2026-86589?
No fix has been published for CVE-2026-86589 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-86589 being exploited?
There is no known exploitation of CVE-2026-86589 in the wild and no public exploit code.
Sources
Also known as GHSA-9w3m-gv8w-f7ww.