CVE-2026-8856

HIGH

IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service in configurations where an attacker has write access to parts of the server configuration.

CVSS v3.1 Score

7.7
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Published: 5/26/2026Modified: 5/26/2026

Related Intelligence (1)

CRITICALVulnerability

NVD CRITICAL: CVE-2026-8856 — IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service in configuration...

IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service in configurations where an attacker has write access to parts of the server configuration.

CVE-2026-8856
NIST NVD

References (1)

https://www.ibm.com/support/pages/node/7274065Vendor Advisory