CVE-2024-51451 Multiple Vulnerabilities in IBM Concert Software

Medium 6.5 Published 4 Feb 2026 Updated 5 Feb 2026

Attackers can inject HTTP headers to perform cross-site scripting, cache poisoning, or session hijacking on IBM Concert systems.

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-2024-51451?

CVE-2024-51451 is a medium-severity cross-site scripting vulnerability in Ibm Concert, published on 4 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

IBM Concert 1.0.0 through 2.1.0 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking.

Weakness: CWE-644

Which versions are affected by CVE-2024-51451?

It affects 1 product.

Products include Ibm Concert.

How do I fix CVE-2024-51451?

No fix has been published for CVE-2024-51451 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2024-51451 being exploited?

There is no known exploitation of CVE-2024-51451 in the wild and no public exploit code.

All Ibm Concert vulnerabilities

Sources

Also known as GHSA-c2m2-2cpv-rg7h.