Quick answers
- Is CVE-2026-84823 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-84823 being exploited in the wild.
- How severe is CVE-2026-84823?
- High severity, with a CVSS score of 7.1, published 16 October 2026.
- Which products and versions are affected?
- Red Hat WildFly.
- Is there a fix for CVE-2026-84823?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-84823 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-84823?
- Check whether you run Red Hat WildFly. 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 path traversal vulnerability in WildFly's `take-snapshot` operation allows a user with the Monitor RBAC role to manipulate the `name` parameter and write the server configuration to an arbitrary filesystem location. The attacker can then read the configuration file from that location to retrieve sensitive credentials and other protected data, bypassing RBAC restrictions. The vulnerability requires authenticated access with at least the Monitor role.
Affected products
- Red Hat WildFly
Timeline
- 2026-10-16: disclosed