CVE-2026-11751 Security feature bypass in Armeria
Attackers can perform man-in-the-middle attacks on xDS-managed upstream connections due to silently disabled TLS peer verification in the Armeria library.
- 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-2026-11751?
CVE-2026-11751 is a critical vulnerability in LY Corporation Armeria, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been identified in armeria-xds versions prior to 1.41.0, where xDS upstream TLS peer verification may be silently disabled, allowing man-in-the-middle attacks against xDS-managed upstream connections.
Which versions are affected by CVE-2026-11751?
How do I fix CVE-2026-11751?
No fix has been published for CVE-2026-11751 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-11751 being exploited?
There is no known exploitation of CVE-2026-11751 in the wild and no public exploit code.
Sources
Also known as GHSA-6qfw-3mvj-m6v5.