CVE-2026-82378: Apache Roller: OAuth authorization endpoint trusts request-supplied identity

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

Severity: Moderate 
    CVSS 3.1: 9.0 (critical) CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected versions:

- Apache Roller 6.1.5

Description:

Incorrect Authorization in the OAuth 1.0a authorization endpoint of Apache Roller 6.1.5 allows an unauthenticated 
remote attacker who learns an outstanding request token for a configured site-wide consumer to bind that token to an 
arbitrary user account, including an administrator, by submitting an unsigned authorization request. The endpoint 
derives the authorizing identity from a request-supplied value rather than the authenticated session. Only 
installations that configure an OAuth 1.0a site-wide consumer are affected, and exploitation requires knowledge of one 
of its outstanding request tokens. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which binds 
authorization to the logged-in session.

Credit:

meifukun (finder)

References:

https://github.com/apache/roller/pull/165
https://roller.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-82378