CVE-2026-5222

LOW EPSS 24.6%
Published May 25, 20261mo ago · Modified Jun 17, 20262w ago
2.3 CVSS 4.0
Low
Find Similar
Published May 25, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
2.3
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction P
Scope X

Threat Intelligence

EPSS Exploit Probability
24.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-647

Affected Products 1

VendorProductVersionRange
rust-langcargo*≥1.68.0  –  <1.96.0

References 3

  • blog.rust-lang.org https://blog.rust-lang.org/2026/05/25/cve-2026-5222/
    Vendor Advisory
  • github.com https://github.com/rust-lang/cargo/pull/17031
    Issue TrackingPatch
  • groups.google.com https://groups.google.com/g/rustlang-security-announcements/c/SfUxOiIdY5s
    Mailing ListThird Party Advisory

Remediation

  • github.com https://github.com/rust-lang/cargo/pull/17031
    Issue TrackingPatch