| Name | CVE-2026-5222 |
| Description | Cargo between 1.68 and 1.96 incorrectly normalized the URLs of third-party registries using the sparse index protocol. If a hosting provider allowed multiple registries to be hosted with arbitrary names within the same domain, an attacker able to publish crates in a registry could obtain the credentials of others users of the same registry. The severity of the vulnerability is **low**, due to the extremely niche requirements needed to achieve the attack. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| cargo (PTS) | bullseye | 0.47.0-3 | vulnerable |
| bookworm | 0.66.0+ds1-1 | vulnerable | |
| rust-cargo (PTS) | bullseye | 0.43.1-4 | vulnerable |
| bookworm | 0.66.0-1 | vulnerable | |
| trixie | 0.86.0-2 | vulnerable | |
| forky, sid | 0.91.0-4 | fixed | |
| rustc (PTS) | bullseye | 1.48.0+dfsg1-2 | vulnerable |
| bookworm | 1.63.0+dfsg1-2 | vulnerable | |
| trixie | 1.85.0+dfsg3-1 | vulnerable | |
| forky, sid | 1.95.0+dfsg1-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| cargo | source | (unstable) | (unfixed) | |||
| rust-cargo | source | (unstable) | 0.91.0-3 | |||
| rustc | source | (unstable) | 1.95.0+dfsg1-2 |
[bookworm] - cargo <no-dsa> (Minor issue)
[bullseye] - cargo <postponed> (Minor issue)
[trixie] - rust-cargo <no-dsa> (Minor issue)
[bookworm] - rust-cargo <no-dsa> (Minor issue)
[bullseye] - rust-cargo <postponed> (Minor issue)
[trixie] - rustc <no-dsa> (Minor issue)
[bookworm] - rustc <no-dsa> (Minor issue)
[bullseye] - rustc <postponed> (Minor issue)
https://groups.google.com/g/rustlang-security-announcements/c/SfUxOiIdY5s
https://blog.rust-lang.org/2026/05/25/cve-2026-5222/
https://github.com/rust-lang/cargo/commit/c4d63a44234de22dc745231c416b80ed848d997f