Quick answers
- Is CVE-2026-91865 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91865 being exploited in the wild.
- How severe is CVE-2026-91865?
- High severity, with a CVSS score of 7.5, published 21 September 2026.
- Which products and versions are affected?
- Apache Neethi prior to 3.2.4.
- Is there a fix for CVE-2026-91865?
- 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-2026-91865 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-91865?
- Check whether you run Apache Neethi 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
The vulnerability is a denial-of-service issue in the WS-Policy normalization process where repeated policy references trigger exponential re-expansion, leading to CPU and memory exhaustion. The attack requires network access to send a malicious policy document to an application using vulnerable Neethi versions. Apache has released version 3.2.4 as a fix.
Affected products
- Apache Neethi prior to 3.2.4
Timeline
- 2026-09-21: disclosed