CVE-2026-8854 IBM HTTP Server is affected by multiple vulnerabilities

High 7.5 Published 26 May 2026 Updated 26 May 2026

Attackers can cause denial of service in IBM HTTP Server by exploiting the optional mod_mem_cache module.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-8854?

CVE-2026-8854 is a high-severity denial of service vulnerability in IBM HTTP Server, published on 26 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service via the optional module mod_mem_cache.

Weakness: CWE-825

Which versions are affected by CVE-2026-8854?

It affects 1 product.

Products include Ibm Http Server.

How do I fix CVE-2026-8854?

No fix has been published for CVE-2026-8854 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-8854 being exploited?

There is no known exploitation of CVE-2026-8854 in the wild and no public exploit code.

Sources

Also known as GHSA-2h2g-6j29-j4fm.