CVE-2026-82387: Apache Roller: Stored cross-site scripting via uploaded media content type

["David M. Johnson" <snoopdave () apache org>]

Severity: Moderate 
    CVSS 3.1: 5.4 (medium) CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected versions:

- Apache Roller 6.1.5

Description:

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Apache Roller 6.1.5 allows a 
user with media-upload rights to store active content on Roller's origin, because the media upload feature trusts the 
upload-supplied content type and serves the stored file back with that type. A victim who opens the uploaded file 
executes the stored script. Media uploads are disabled by default; only installations that enable them are affected, 
and the shipped type restrictions do not block active content once uploads are on. Users are recommended to upgrade to 
Apache Roller 6.1.6 or later, which derives the stored type from file content and serves non-image media as a download.

Credit:

m4dn355 (finder)

References:

https://github.com/apache/roller/pull/174
https://roller.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-82387