Quick answers
- Is CVE-2026-55799 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-55799 being exploited in the wild.
- How severe is CVE-2026-55799?
- Critical severity, with a CVSS score of 9.8, published 10 August 2026.
- Which products and versions are affected?
- Apache Ranger through 2.8.0.
- Is there a fix for CVE-2026-55799?
- A patch was published on 2026-08-10: Version 2.9.0 fixes this issue Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-55799 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-55799?
- Check whether you run Apache Ranger at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A remote code execution vulnerability exists in the GraalScriptEngineCreator component of Apache Ranger versions up to 2.8.0. The vulnerability likely stems from unsafe script evaluation or deserialization, allowing attackers to achieve arbitrary code execution without requiring authentication or user interaction. The affected component processes dynamic scripts or policies, and the RCE can be triggered over the network. Apache has released version 2.9.0 which addresses this vulnerability.
Affected products
- Apache Ranger through 2.8.0
Timeline
- 2026-08-09: disclosed
- 2026-08-10: patched: Version 2.9.0 fixes this issue