Vulnerability · Published May 26, 2026 · Assigned by ibm
CVE-2026-8855IBM HTTP Server is affected by multiple vulnerabilities
High 8.1
In plain English
A high-severity code injection 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 0.5% (higher than 40% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.5%top 60.2% 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 remote code execution and denial of service in configurations with TLS mutual authentication (client authentication).
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | HTTP Server | 8.5.0 – through Interim Fix 0029.0 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.ibm.com/support/pages/node/7274065 vendor-advisory, patch