CVE-2026-90910

9.8Critical

Published 19 Oct 2026 · NVD status: Awaiting Analysis · AI triage by gemini-3.8-flash

9.8Critical

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Impact: Full C/I/A compromise
Weakness: CWE-306

Impact

Unauthenticated remote attackers can read reaction metadata from restricted content or add and remove reactions without proper permissions. They only need network access to the reaction API.

Root cause

The reaction API endpoints lack authentication checks and do not enforce content visibility controls.

Affected systems

Apache Answer through 2.0.2

CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Fix & remediation

Upgrade Apache Answer to version 2.0.3. No temporary workaround is documented.

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD 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.

References

Source: nvd.nist.gov/vuln/detail/CVE-2026-90910