CVE-2026-82384 Apache Roller: Unauthenticated deserialization in the XML-RPC endpoint
Unauthenticated remote attackers can achieve code execution via unsafe deserialization in the XML-RPC endpoint of Apache Roller.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82384?
CVE-2026-82384 is a critical unsafe deserialization vulnerability in Apache Roller, published on 28 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-502
Which versions are affected by CVE-2026-82384?
How do I fix CVE-2026-82384?
No fix has been published for CVE-2026-82384 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-82384 being exploited?
There is no known exploitation of CVE-2026-82384 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-9rhg-vvf7-p29p.