CVE-2026-5222
Cargo can be coerced to share credentials between registries
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:NIntegrityNone
A:NAvailabilityNone
Weaknesses
Affected Products
Rust
oss-project
The Rust Foundation
oss-projectaka rust
Сообщество свободного программного обеспечения
oss-projectaka fsf
rust-lang
oss-projectaka rust, async-h1, cargo
Exploitability
Official Patch Available
References
https://groups.google.com/g/rustlang-security-announcements/c/SfUxOiIdY5s
groups.google.com
https://blog.rust-lang.org/2026/05/25/cve-2026-5222/
blog.rust-lang.org
https://github.com/rust-lang/cargo/pull/17031
github.com
and 2 more references View all →
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