---
title: "CVE-2026-90910: Apache Answer - Broken Access Control"
description: "Apache Answer <= 2.0.2 contains a broken access control caused by missing authentication enforcement in the reaction API, letting unauthorized users read restricted reaction metadata and modify their own reactions, exploit requires no authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-90910/
---

# CVE-2026-90910 Apache Answer - Broken Access Control

Apache Answer <= 2.0.2 contains a broken access control caused by missing authentication enforcement in the reaction API, letting unauthorized users read restricted reaction metadata and modify their own reactions, exploit requires no authentication.

CVSS base score 9.8 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-90910)

## Details

Type

Broken Access Control

Impact

Information Disclosure, Data Tampering

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

19 October 2026

Updated

20 October 2026

Weakness

[CWE-306](https://cwe.mitre.org/data/definitions/306.html)

## Vendor fix

Upgrade to version 2.0.3.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-90910](https://nvd.nist.gov/vuln/detail/CVE-2026-90910)
- [https://lists.apache.org/thread/bhw80mvmnt9206wyqz80rcbwx1znv1p3](https://lists.apache.org/thread/bhw80mvmnt9206wyqz80rcbwx1znv1p3)
- [http://www.openwall.com/lists/oss-security/2026/10/16/34](http://www.openwall.com/lists/oss-security/2026/10/16/34)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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