PatchTheCVECVE-2026-91865: A small WS-Policy document using repeated policy references can force Neethi to re-expand the same references
CVE-2026-91865 is a high-severity flaw (CVSS 7.5) affecting neethi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A small WS-Policy document using repeated policy references can force Neethi to re-expand the same references exponentially during normalization, consuming huge amounts of CPU and memory (denial of service). Users are recommended to upgrade to version 3.2.4, which fixes this issue.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.7% (top 46%) |
| CISA exploited list | No |
| Weakness | CWE-770 |
| Published | 2026-09-21 |
| Last modified | 2026-09-25 |
Last updated 2026-09-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-91865?
neethi: upgrade to 3.2.4. Exact commands for each OS are on this page.
Is CVE-2026-91865 being exploited?
CVE-2026-91865 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-91865 affect?
CVE-2026-91865 affects neethi. Severity is high (CVSS 7.5). A small WS-Policy document using repeated policy references can force Neethi to re-expand the same references exponentially during normalization, consuming huge amounts of CPU and memory (denial of service). Users are recommended to upgrade
How urgent is CVE-2026-91865?
Priority 50/100. High severity; Remotely exploitable, no login, no user action; On your watchlist
Related CVEs
- CVE-2026-42404 MEDIUM 6.5 UPGRADE Apache Neethi does not impose any restrictions on URIs when manually fetching remote policy references through
- CVE-2026-42402 HIGH 7.5 UPGRADE Apache Neethi is vulnerable to a Denial of Service attack through algorithmic complexity in policy normalizati
- CVE-2026-42403 HIGH 7.5 UPGRADE Apache Neethi does not properly detect circular references in policy definitions
- CVE-2026-66143 HIGH 7.5 DOWNGRADE It is possible to bypass the maximum number of normalized policy alternatives that was introduced in Apache Ne
- CVE-2026-66142 HIGH 7.5 UPGRADE Apache Neethi is vulnerable to uncontrolled recursion when parsing policies that lack policy Ids or with deepl