Vulnerability · Published May 26, 2026 · Assigned by ibm
CVE-2026-8856IBM HTTP Server is affected by multiple vulnerabilities
High 7.7
In plain English
A high-severity uncontrolled resource consumption in HTTP Server from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).
Severity (CVSS 3.1)7.7High
Exploit odds (30 days)0.2%top 90.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | HTTP Server | 8.5.0 – through Interim Fix 0029.0 |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
References
- https://www.ibm.com/support/pages/node/7274065 vendor-advisory, patch