CVE-2026-90910: Apache Answer: Reaction API authorization bypass for restricted content
Apache Answer through 2.0.2 lets unauthorized users read or change reaction metadata on restricted content.
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CVE-2026-90910
Missing auth on Apache Answer reaction API through 2.0.2
- CVSS 3.1
- 9.8 critical
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
Apache Answer through 2.0.2 does not enforce content visibility on its reaction API. An unauthenticated remote attacker can read reaction metadata on restricted content and add or remove their own reactions without any user interaction. Anyone running an affected Apache Answer instance is affected. Upgrade to 2.0.3 fixes the issue.
What to do: Upgrade Apache Answer to 2.0.3, which enforces content visibility on the reaction API.
| Product | Affected | Fixed in |
|---|---|---|
| Apache Answer | through 2.0.2 | 2.0.3 |
Estimated exposure
No basis for an estimate.
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description · NVD
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.
- Weakness
- CWE-306
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H