RUSTSEC-2026-0260 `arrayref` 0.3.10 was removed from crates.io due to a malicious dependency
A malicious version of the arrayref Rust crate executed arbitrary code during build, requiring developers to ensure they do not use the compromised release.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is RUSTSEC-2026-0260?
RUSTSEC-2026-0260 is a vulnerability in arrayref, published on 20 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A new version of the arrayref crate was published with a direct dependency
on proc-macro1, which would execute a malicious build script.
This compromised version was published on 2026-08-20 and removed approximately
86 minutes later. It was downloaded 2,285 times, which constituted less than
10% of arrayref download traffic across all versions, as most users had older
versions of arrayref in their lockfiles.
Which versions are affected by RUSTSEC-2026-0260?
1 open source package ship an affected version, including arrayref.
| Package | Affected | Fixed in |
|---|---|---|
arrayref crates.io | From 0.3.10-0 | None |
How do I fix RUSTSEC-2026-0260?
No fix has been published for RUSTSEC-2026-0260 yet. Limit exposure of the affected software until one is available.
Is RUSTSEC-2026-0260 being exploited?
There is no known exploitation of RUSTSEC-2026-0260 in the wild and no public exploit code.