oss-security - CVE-2026-48912: Apache Answer: Improper authorization in avatar update cleanup allows authenticated users to delete arbitrary uploaded files by URL

Follow @Openwall on Twitter for new release announcements and other news

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <82ccf235-9a7b-cd6c-e3be-3a2b25fb540b@apache.org>
Date: Wed, 05 Aug 2026 14:26:28 +0000
From: Enxin Xie <linkinstar@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-48912: Apache Answer: Improper authorization in avatar
 update cleanup allows authenticated users to delete arbitrary uploaded
 files by URL 

Severity: moderate 

Affected versions:

- Apache Answer through 2.0.1

Description:

Improper Input Validation vulnerability in Apache Answer.

This issue affects Apache Answer: through 2.0.1.

 A missing ownership check in the avatar-cleanup logic allows any authenticated user to delete other users' uploaded files by supplying their file URLs.
Users are recommended to upgrade to version 2.0.2, which fixes the issue.

Credit:

tonghuaroot (reporter)

References:

https://answer.apache.org
https://www.cve.org/CVERecord?id=CVE-2026-48912

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.