CVE-2026-82377 Apache Roller: Missing weblog authorization in XML-RPC Blogger/MetaWeblog handlers
Authenticated users can read, modify, or delete other users' weblog content via XML-RPC APIs if the feature is enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82377?
CVE-2026-82377 is a critical missing authorization vulnerability in Apache Roller, published on 28 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-82377?
How do I fix CVE-2026-82377?
No fix has been published for CVE-2026-82377 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-82377 being exploited?
There is no known exploitation of CVE-2026-82377 in the wild and no public exploit code.
Sources
Also known as GHSA-crwh-hjp8-p7q9.