# 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.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Sep 2026
- **Updated:** 29 Sep 2026
- **Also known as:** GHSA-9rhg-vvf7-p29p

## 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 (Deserialization of Untrusted Data)

## 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.

## 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:

- CVE-2026-82384 PoC: Apache Roller 6.1.5 unauthenticated XML-RPC ex:serializable Java deserialization (pre-auth RCE). Check, ysoserial exploit, mass bulk scanning, colored CLI. PoCbit — https://pocbit.org/pocs/cve-2026-82384 (github_poc): https://github.com/murrez/CVE-2026-82384

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-82384 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-82384 in the wild and no public exploit code.

Affected product: Apache Roller. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-82384/ (Markdown: https://insights.sbomify.com/CVE-2026-82384/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-82384
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-82384
- OSV: https://osv.dev/vulnerability/CVE-2026-82384

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-82384/
Summaries are generated and may contain mistakes; the official description above is the record.