CVE-2026-48912: CWE-639 Authorization Bypass Through User-Controlled Key in Apache Software Foundation Apache Answer
CVE-2026-48912 is an improper input validation vulnerability in Apache Answer up to version 2.0.1. The flaw allows any authenticated user to delete other users' uploaded files by exploiting a missing ownership check in the avatar-cleanup logic. The issue is fixed in version 2.0.2.
AI Analysis
Technical Summary
This vulnerability in Apache Answer (CVE-2026-48912) involves a missing ownership verification in the avatar-cleanup functionality. Authenticated users can supply file URLs of other users to delete files they do not own. This is classified under CWE-639 (Authorization Bypass Through User-Controlled Key). The vulnerability affects all versions prior to 2.0.2. The CVSS 3.1 base score is 6.5 (medium severity), indicating a network attack vector with low attack complexity, requiring privileges, no user interaction, unchanged scope, no confidentiality impact, high integrity impact, and no availability impact.
Potential Impact
An authenticated user can delete files uploaded by other users, impacting data integrity. There is no confidentiality or availability impact reported. This could lead to unauthorized deletion of user content within Apache Answer instances running affected versions.
Mitigation Recommendations
Users should upgrade Apache Answer to version 2.0.2 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated. Patch status is confirmed by the vendor advisory stating the fix is in version 2.0.2.
CVE-2026-48912: CWE-639 Authorization Bypass Through User-Controlled Key in Apache Software Foundation Apache Answer
Description
CVE-2026-48912 is an improper input validation vulnerability in Apache Answer up to version 2.0.1. The flaw allows any authenticated user to delete other users' uploaded files by exploiting a missing ownership check in the avatar-cleanup logic. The issue is fixed in version 2.0.2.
CVSS v3.1
Score 6.5medium
Affected software
Apache Software Foundation
Apache Answer
pkg:maven/org.apache.answer/answerRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Apache Answer (CVE-2026-48912) involves a missing ownership verification in the avatar-cleanup functionality. Authenticated users can supply file URLs of other users to delete files they do not own. This is classified under CWE-639 (Authorization Bypass Through User-Controlled Key). The vulnerability affects all versions prior to 2.0.2. The CVSS 3.1 base score is 6.5 (medium severity), indicating a network attack vector with low attack complexity, requiring privileges, no user interaction, unchanged scope, no confidentiality impact, high integrity impact, and no availability impact.
Potential Impact
An authenticated user can delete files uploaded by other users, impacting data integrity. There is no confidentiality or availability impact reported. This could lead to unauthorized deletion of user content within Apache Answer instances running affected versions.
Mitigation Recommendations
Users should upgrade Apache Answer to version 2.0.2 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated. Patch status is confirmed by the vendor advisory stating the fix is in version 2.0.2.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-05-26T11:46:50.101Z
- State
- PUBLISHED
Threat ID: 6a736b64bf8831d5392da655
Added to database: 08/05/2026, 16:57:08 UTC
Last enriched: 08/13/2026, 17:29:52 UTC
Last updated: 09/18/2026, 00:41:58 UTC
Views: 59
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