CVE-2026-15661 IBM Concert Software Improper Output Neutralization for Logs
An unauthorized user can inject data into log messages in IBM Concert due to improper output neutralization, potentially compromising log integrity.
- 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-2026-15661?
CVE-2026-15661 is a medium-severity vulnerability in IBM Concert, published on 19 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM Concert 1.0 through 3.0.0 could allow an unauthorized user to inject data into log messages due to improper neutralization of special elements when written to log files.
Weakness: CWE-117
Which versions are affected by CVE-2026-15661?
How do I fix CVE-2026-15661?
No fix has been published for CVE-2026-15661 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-15661 being exploited?
There is no known exploitation of CVE-2026-15661 in the wild and no public exploit code.
Sources
Also known as GHSA-ppvq-79rq-hjrj.