Critical 9.8Published Oct 19, 2026

CVE-2026-90910Apache Answer: Reaction API authorization bypass for restricted content

Updated under an hour ago (Oct 28, 2026, 8:50 AM ET)

Does this affect you?

It affects Apache Software Foundation Apache Answer. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.48%, higher than 41% of scored CVEs.

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Every CVE for Apache Software Foundation Apache Answer

Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-306
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.48% (percentile 41)
Assigned by: apache
NVD analysis: Awaiting Analysis
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

Apache Software Foundation Apache Answer apache_software_foundation:apache_answer (from the name)	through 2.0.2	CNA record

References

References

https://lists.apache.org/thread/bhw80mvmnt9206wyqz80rcbwx1znv1p3	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/10/16/34

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.