# \`internment\` 0.8.7 was removed from crates.io due to a malicious dependency Advisory record · `RUSTSEC-2026-0266` - **Identifiers:** `RUSTSEC-2026-0266` - **State:** Confirmed - **Severity:** No CVSS score - **Critical:** No - **Published:** 20 Aug 2026 - **Updated:** 21 Aug 2026 - **Reviewed by a person:** No Published by OSV at 20 Aug 2026, 12:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. ## Affected packages - `internment` (crates.io): affected `>=0.8.7-0`; no fixed version yet ## Machine-written summary Summary written by Claude Haiku from the source advisory. Not reviewed by a person. > The internment crate version 0.8.7 and later was published with a direct dependency on a malicious package, proc-macro1, whose build script would execute malicious code. An attacker did not need any special access beyond the ability to install this crate, since the build script runs during compilation. The compromised version was removed from crates.io about 90 minutes after publication, and no fixed version is listed, so users should avoid version 0.8.7 and treat any system that built it as potentially compromised. Written 8 Nov 2026. ## Not analysed yet We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check. ## Severity and exploitation No source has published a CVSS score for this record yet. - **CISA KEV:** Not listed. - **EPSS:** No score. ## Timeline - 31 Oct 2026, 15:18 UTC: First seen by agentprime - 31 Oct 2026, 15:18 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/RUSTSEC-2026-0266) ## Sources - [OSV: RUSTSEC-2026-0266](https://osv.dev/vulnerability/RUSTSEC-2026-0266) - - - Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code. ## Check whether this affects you A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet. - With the agentprime MCP server (), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: - In a browser: reads your lockfile in the browser, never uploading it. - Whether it touches your code, with file and line: the Claude Code plugin, - As JSON: , or `POST https://api.agentprime.io/v1/match` with your packages () --- The web page: . Everything for agents: .