# 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.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Oct 2026
- **Updated:** 19 Oct 2026
- **Also known as:** GHSA-9w3m-gv8w-f7ww

## 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 (Incorrect Implementation of Authentication Algorithm)

## 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.

## Is CVE-2026-86589 being exploited?

There is no known exploitation of CVE-2026-86589 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-86589 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-86589 in the wild and no public exploit code.

Affected product: Apache Answer. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-86589/ (Markdown: https://insights.sbomify.com/CVE-2026-86589/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-86589
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-86589
- OSV: https://osv.dev/vulnerability/CVE-2026-86589

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-86589/
Summaries are generated and may contain mistakes; the official description above is the record.