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Vulnerabilities

Vulnerability · CVE-2026-5222

Cargo between 1.68 and 1.96 incorrectly normalized the URLs of third-party registries using the sparse index protocol.

Published May 25, 2026 · catalog updated Jul 23, 2026 · Cargo between 1.68 and

Check if you run it

No confirmed exploitation is on record for CVE-2026-5222. EPSS is 0.48%. Act only if a listed version of Cargo between 1.68 and is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Cargo between 1.68 and).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low2.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.48%
Remediation
Advisory link
Affected products
cpe rust-lang/cargo

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe rust-lang/cargoversion unspecified

How to fix CVE-2026-5222

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-5222. EPSS is 0.48%. Act only if a listed version of Cargo between 1.68 and is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-647. EPSS 0.48%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 25, 2026 · NIST NVD

    Detected

    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

  2. Jul 23, 2026 · NIST NVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2026-5222

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-5222

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-5222

    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 coul

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.