CVE-2026-46699 (GCVE-0-2026-46699)

Vulnerability from cvelistv5 – Published: 2026-06-18 20:47 – Updated: 2026-06-18 20:47
VLAI
Title
conda-smithy vulnerable to misrouted repository invitation by conda-forge-webservices[bot] due to GitHub username takeover leading to unintended write access in conda-forge feedstock repository
Summary
conda-smithy is a tool for combining a conda recipe with configurations to build using freely hosted CI services into a single repository. Prior to version 3.61.0, a vulnerability in the conda-forge automated webservices allowed unintended write access to feedstock repositories through GitHub username takeover. The root cause is the use of mutable GitHub usernames as identifiers for repository invitation routing, rather than stable, immutable GitHub user IDs. Version 3.61.0 fixes the issue.
Severity
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L
CWE
  • CWE-284 - Improper Access Control
Assigner
References
Impacted products
Vendor Product Version
conda-forge conda-smithy Affected: < 3.61.0
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "conda-smithy",
          "vendor": "conda-forge",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.61.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "conda-smithy is a tool for combining a conda recipe with configurations to build using freely hosted CI services into a single repository. Prior to version 3.61.0, a vulnerability in the conda-forge automated webservices allowed unintended write access to feedstock repositories through GitHub username takeover. The root cause is the use of mutable GitHub usernames as identifiers for repository invitation routing, rather than stable, immutable GitHub user IDs. Version 3.61.0 fixes the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 7.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "CWE-284: Improper Access Control",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-18T20:47:28.481Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/conda-forge/conda-smithy/security/advisories/GHSA-g95q-3cmj-fvh8",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/conda-forge/conda-smithy/security/advisories/GHSA-g95q-3cmj-fvh8"
        },
        {
          "name": "https://github.com/conda-forge/conda-smithy/commit/3b0bcd92ebd6f41edd341401d84583a20911c587",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/conda-forge/conda-smithy/commit/3b0bcd92ebd6f41edd341401d84583a20911c587"
        }
      ],
      "source": {
        "advisory": "GHSA-g95q-3cmj-fvh8",
        "discovery": "UNKNOWN"
      },
      "title": "conda-smithy vulnerable to misrouted repository invitation by conda-forge-webservices[bot] due to GitHub username takeover leading to unintended write access in conda-forge feedstock repository"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-46699",
    "datePublished": "2026-06-18T20:47:28.481Z",
    "dateReserved": "2026-05-15T23:26:58.308Z",
    "dateUpdated": "2026-06-18T20:47:28.481Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.


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