# CVE-2026-5222

## Summary

- **CVE ID:** CVE-2026-5222
- **Severity:** LOW
- **CVSS Score:** 2.3 (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N)
- **CWE:** CWE-647
- **Published:** May 25, 2026
- **Last Modified:** May 26, 2026

## 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.

## Affected Products

- Rust — Cargo (1.68.0)

## References

- [CNA](https://groups.google.com/g/rustlang-security-announcements/c/SfUxOiIdY5s)
- [CNA](https://blog.rust-lang.org/2026/05/25/cve-2026-5222/)
- [CNA](https://github.com/rust-lang/cargo/pull/17031)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.48%
- **EPSS Percentile:** 39.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._