CVE-2026-77816 IBM WebSphere Application Server Liberty Improper Certificate Validation
Man-in-the-middle attackers can bypass certificate validation in the administrative client to obtain sensitive information.
- 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-2026-77816?
CVE-2026-77816 is a medium-severity vulnerability in IBM WebSphere Application Server - Liberty, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.9 administrative client could allow man-in-the-middle attacks. An attacker could exploit this vulnerability to obtain sensitive information.
Weakness: CWE-295
Which versions are affected by CVE-2026-77816?
How do I fix CVE-2026-77816?
No fix has been published for CVE-2026-77816 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-77816 being exploited?
There is no known exploitation of CVE-2026-77816 in the wild and no public exploit code.
Sources
Also known as GHSA-6v8r-r3rp-wwmm.