Severity: Critical
CVSS 3.1: 9.8 (critical) CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected versions:
- Apache Roller 6.1.5
Description:
Deserialization of Untrusted Data in Apache Roller 6.1.5 allows an
unauthenticated remote attacker to cause deserialization of attacker-controlled
bytes, because the XML-RPC endpoint accepts vendor extension types that are
deserialized during request parsing, before authentication. The servlet is
mapped unconditionally, so parsing occurs even when the global XML-RPC feature
is set to disabled; no non-default configuration is required for this path.
This can lead to remote code execution. Users are recommended to upgrade to
Apache Roller 6.1.6 or later, which disables the extension types and rejects
requests when the XML-RPC feature is disabled.
Credit:
n0mi1k (finder)
References:
https://github.com/apache/roller/pull/171
https://roller.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-82384
