Vulnerability-Lookup

FKIE_CVE-2026-5222

Vulnerability from fkie_nvd - Published: 2026-05-25 10:16 - Updated: 2026-07-23 17:10

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Summary

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.

References

URL	Tags
986d4109-89ea-491f-99fd-a8e4803919bd	https://blog.rust-lang.org/2026/05/25/cve-2026-5222/	Vendor Advisory
986d4109-89ea-491f-99fd-a8e4803919bd	https://github.com/rust-lang/cargo/pull/17031	Issue Tracking, Patch
986d4109-89ea-491f-99fd-a8e4803919bd	https://groups.google.com/g/rustlang-security-announcements/c/SfUxOiIdY5s	Mailing List, Third Party Advisory

Impacted products

	Vendor	Product	Version
	rust-lang	cargo	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://crates.io",
          "defaultStatus": "unaffected",
          "modules": [
            "sparse index"
          ],
          "packageName": "cargo",
          "product": "Cargo",
          "repo": "https://github.com/rust-lang/cargo",
          "vendor": "Rust",
          "versions": [
            {
              "lessThan": "1.96.0",
              "status": "affected",
              "version": "1.68.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "986d4109-89ea-491f-99fd-a8e4803919bd"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:rust-lang:cargo:*:*:*:*:*:rust:*:*",
              "matchCriteriaId": "143A0C07-6AA8-4711-A789-152DA178214C",
              "versionEndExcluding": "1.96.0",
              "versionStartIncluding": "1.68.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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.\u00a0The severity of the vulnerability is **low**, due to the extremely niche requirements needed to achieve the attack."
    },
    {
      "lang": "es",
      "value": "Cargo entre 1.68 y 1.96 normaliz\u00f3 incorrectamente las URL de registros de terceros utilizando el protocolo de \u00edndice disperso. Si un proveedor de alojamiento permit\u00eda que se alojaran m\u00faltiples registros con nombres arbitrarios dentro del mismo dominio, un atacante capaz de publicar crates en un registro podr\u00eda obtener las credenciales de otros usuarios del mismo registro. La gravedad de la vulnerabilidad es baja, debido a los requisitos extremadamente espec\u00edficos necesarios para lograr el ataque."
    }
  ],
  "id": "CVE-2026-5222",
  "lastModified": "2026-07-23T17:10:00.123",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 2.3,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "NONE",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "986d4109-89ea-491f-99fd-a8e4803919bd",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-5222",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-26T14:36:59.303136Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-25T10:16:15.273",
  "references": [
    {
      "source": "986d4109-89ea-491f-99fd-a8e4803919bd",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://blog.rust-lang.org/2026/05/25/cve-2026-5222/"
    },
    {
      "source": "986d4109-89ea-491f-99fd-a8e4803919bd",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/rust-lang/cargo/pull/17031"
    },
    {
      "source": "986d4109-89ea-491f-99fd-a8e4803919bd",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://groups.google.com/g/rustlang-security-announcements/c/SfUxOiIdY5s"
    }
  ],
  "sourceIdentifier": "986d4109-89ea-491f-99fd-a8e4803919bd",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-647"
        }
      ],
      "source": "986d4109-89ea-491f-99fd-a8e4803919bd",
      "type": "Secondary"
    }
  ]
}

CVE-2026-5222 (GCVE-0-2026-5222)

Vulnerability from cvelistv5 – Published: 2026-05-25 08:54 – Updated: 2026-05-26 14:43

Title

Cargo can be coerced to share credentials between registries

Summary

Severity

2.3 (Low)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-26 14:36 UTC

CWE

CWE-647 - Use of Non-Canonical URL paths for authorization decisions

Assigner

rust redhat root

References

3 references

URL	Tags
https://groups.google.com/g/rustlang-security-ann…	vendor-advisorymailing-list
https://blog.rust-lang.org/2026/05/25/cve-2026-5222/	vendor-advisory
https://github.com/rust-lang/cargo/pull/17031	patch

Impacted products

1 product

Vendor	Product	Version
Rust	Cargo	Affected: 1.68.0 , < 1.96.0 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-5222",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-26T14:36:59.303136Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-26T14:43:10.019Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://crates.io",
          "defaultStatus": "unaffected",
          "modules": [
            "sparse index"
          ],
          "packageName": "cargo",
          "product": "Cargo",
          "repo": "https://github.com/rust-lang/cargo",
          "vendor": "Rust",
          "versions": [
            {
              "lessThan": "1.96.0",
              "status": "affected",
              "version": "1.68.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
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          "lang": "en",
          "supportingMedia": [
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            }
          ],
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
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            "exploitMaturity": "NOT_DEFINED",
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            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "NONE",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

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FKIE_CVE-2026-5222

CVE-2026-5222 (GCVE-0-2026-5222)

Tags

Sightings

Nomenclature