CVE-2026-90910

Apache Answer: Reaction API authorization bypass for restricted content

Published Oct 19, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
Missing authentication for critical function vulnerability in Apache Answer.



This issue affects Apache Answer: through 2.0.2.



The reaction API did not enforce content visibility controls, allowing unauthorized users to read reaction metadata from restricted content or add and remove their own reactions.



Users are recommended to upgrade to version 2.0.3, which fixes the issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
First Time appeared Apache
Apache answer
Apache Software Foundation
Apache Software Foundation apache Answer
Vendors & Products Apache
Apache answer
Apache Software Foundation
Apache Software Foundation apache Answer
Type Values Removed Values Added
Description Missing authentication for critical function vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. The reaction API did not enforce content visibility controls, allowing unauthorized users to read reaction metadata from restricted content or add and remove their own reactions. Users are recommended to upgrade to version 2.0.3, which fixes the issue.
Title Apache Answer: Reaction API authorization bypass for restricted content
Weaknesses CWE-306
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Oct 19, 2026, 6:50 PM
Reserved
Sep 14, 2026, 10:52 AM
Status
Awaiting Analysis
Published
Oct 19, 2026, 10:16 AM
Modified
Oct 19, 2026, 8:45 PM