Security incident · RUSTSEC-2026-0262
0.1.9 was removed from crates.io due to a malicious dependency
Published Aug 20, 2026 · catalog updated Oct 20, 2026 · 0.1.9 was removed from
Open the advisory
Exploitation likelihood is not on this record for RUSTSEC-2026-0262. A missing EPSS score is not a low risk. Compare 0.1.9 was removed from with the linked advisory before you change production.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (0.1.9 was removed from).
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- EPSS is missing. A missing score is not a low risk.
- Severity
- Unknown—
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- Awaiting synchronization with FIRST
- Remediation
- Advisory link
- Affected products
- crates.io append-only-vec
A new version of the crate was published with a direct dependency on , which would execute a malicious build script. The compromised version of this crate was published on 2026-08-20, and was removed approximately 107 minutes later. The compromised crate version was used as part of a malware campaign targeted at users of , which was downloaded 2,285 times before being removed; see [the advisory][arrayref-advisory] for more detail. [arrayref-advisory]: https://rustsec.org/advisories/RUSTSEC-2026-0260.html
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- crates.io append-only-vec0.1.9 → 0.1.10-0
How to fix RUSTSEC-2026-0262
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
Exploitation likelihood is not on this record for RUSTSEC-2026-0262. A missing EPSS score is not a low risk. Compare 0.1.9 was removed from with the linked advisory before you change production.
Which versions are affected?
Compare what you have installed with 0.1.9 → 0.1.10-0. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Aug 20, 2026 · OpenSSF OSV / OSV Scanner
Detected
A new version of the crate was published with a direct dependency on , which would execute a malicious build script. The compromised version of this crate was published on 2026-08-20, and was removed approximately 107 minutes later. The compromised crate version was used as part of a malware campaign targeted at users of , which was downloaded 2,285 times before being removed; see [the advisory][a
Oct 20, 2026 · OpenSSF OSV / OSV Scanner
Fix available
append-only-vec fixed in 0.1.10-0
Oct 20, 2026 · OpenSSF OSV / OSV Scanner
Fix available
append-only-vec fixed in 0.1.10-0
Oct 20, 2026 · OpenSSF OSV / OSV Scanner
Updated
A new version of the crate was published with a direct dependency on , which would execute a malicious build script. The compromised version of this crate was published on 2026-08-20, and was removed approximately 107 minutes later. The compromised crate version was used as part of a malware campaign targeted at users of , which was downloaded 2,285 times before being removed; see [the advisory][a
Sources
- OpenSSF OSV / OSV ScannerPackage advisoryRUSTSEC-2026-0262
0.1.9 was removed from crates.io due to a malicious dependency
osv.dev
References
Freshness
Last verified in this catalog Oct 20, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.