CVE-2026-77650 Supply chain in append-only-vec
A malicious dependency in the append-only-vec Rust crate allows arbitrary code execution during project compilation via a command-and-control server.
- 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-2026-77650?
CVE-2026-77650 is a critical vulnerability in droundy append-only-vec, published on 21 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The append-only-vec crate 0.1.9 for Rust can trigger execution of malicious code when compiling a project that uses the crate, because it has a rogue dependency that registers with a command-and-control server to offer arbitrary code execution.
Weakness: CWE-506
Which versions are affected by CVE-2026-77650?
How do I fix CVE-2026-77650?
No fix has been published for CVE-2026-77650 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-77650 being exploited?
There is no known exploitation of CVE-2026-77650 in the wild and no public exploit code.
Sources
Also known as GHSA-m5g8-cx2h-cvrh, UBUNTU-CVE-2026-77650.