CVE-2026-51376 Denial of service in n/a
A remote attacker can cause a denial of service in BitChat for iOS by sending an unauthenticated MESSAGE packet to the mesh gossip cache.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-51376?
CVE-2026-51376 is a medium-severity denial of service vulnerability in n/a, published on 28 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue in BitChat for iOS v1.15.0 allows a remote attacker to cause a denial of service via an unauthenticated MESSAGE packet into the mesh gossip cache
Weakness: CWE-444
Which versions are affected by CVE-2026-51376?
How do I fix CVE-2026-51376?
No fix has been published for CVE-2026-51376 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-2026-51376 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-51376 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-4gxj-rhqq-64r3.