CVE-2026-82377 CRITICAL

CVE-2026-82377: Apache Roller: Missing weblog authorization in XML-RPC Blogger/MetaWeblog handlers

Vendor Apache Software Foundation
Product Apache Roller
Weakness CWE-862 · Missing authorization
Published September 28, 2026
Last update September 28, 2026

CVSS base score

9.9/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

Missing Authorization in Apache Roller 6.1.5 allows an authenticated user to read, modify, or delete weblog content belonging to other weblogs through the legacy XML-RPC Blogger and MetaWeblog APIs, because the handlers authenticate the caller but do not verify the caller's permission on the weblog or entry actually affected. Only installations that enable the non-default global XML-RPC setting are affected; the per-weblog API flag defaults to enabled for UI-created weblogs. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which applies an explicit per-method permission check, or to keep the XML-RPC feature disabled.

Key dates

02Disclosure timeline

September 28, 2026 CVE published

Related vulnerabilities

04Related CVE