CVE-2026-91863 — HIGH (7.5)

Q: How severe is CVE-2026-91863?

CVE-2026-91863 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-91863?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Neethi.

Vulnerability Description

A specially crafted WS-Policy document with deeply nested policy elements can bypass Neethi's nesting-depth limit and exhaust the thread stack, crashing the parser (denial of service). Users are recommended to upgrade to version 3.2.4, which fixes this issue.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Apache	Neethi	< 3.2.4

Related Weaknesses (CWE)

CWE-674

References

https://lists.apache.org/thread/72kxj71lvrqqx90xxqqctvpbw0t8mpxwMailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/09/18/10Mailing ListThird Party Advisory

FAQ

What is CVE-2026-91863?

CVE-2026-91863 is a vulnerability with a CVSS score of 7.5 (HIGH). A specially crafted WS-Policy document with deeply nested policy elements can bypass Neethi's nesting-depth limit and exhaust the thread stack, crashing the parser (denial of service). Users are recom...

How severe is CVE-2026-91863?

CVE-2026-91863 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-91863?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Neethi.