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    2 vulnerabilities by wktk

    CVE-2026-55158 (GCVE-0-2026-55158)

    Vulnerability from nvd – Published: 2026-09-15 14:47 – Updated: 2026-09-15 14:47
    VLAI
    Title
    Conflibot: Command injection via crafted pull request branch names under pull_request_target
    Summary
    Conflibot warns in advance when merging a pull request will cause conflicts in other open pull requests. Prior to 1.2.1, src/index.ts builds git checkout, git merge, and git format-patch commands by interpolating the attacker-controlled pull request head.ref value into strings passed to exec. In the documented pull_request_target configuration, an attacker can open a pull request, including from a fork, whose branch name contains shell metacharacters, and the workflow automatically interprets those characters as commands without maintainer interaction. The commands execute on a runner with base-repository secrets and a write-scoped GITHUB_TOKEN, allowing arbitrary command execution, secret or token exfiltration, unauthorized pushes, and other token abuse. The fixed implementations in src/index.ts and src/conflibot.ts use execFile or spawn argument arrays, and the v2 line also uses numeric pull-request refs rather than branch names. This issue is fixed in versions 1.2.1 and 2.0.0.
    Severity
    9.1 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    CWE
    • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    wktk conflibot Affected: < 1.2.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "conflibot",
          "vendor": "wktk",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.2.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Conflibot warns in advance when merging a pull request will cause conflicts in other open pull requests. Prior to 1.2.1, src/index.ts builds git checkout, git merge, and git format-patch commands by interpolating the attacker-controlled pull request head.ref value into strings passed to exec. In the documented pull_request_target configuration, an attacker can open a pull request, including from a fork, whose branch name contains shell metacharacters, and the workflow automatically interprets those characters as commands without maintainer interaction. The commands execute on a runner with base-repository secrets and a write-scoped GITHUB_TOKEN, allowing arbitrary command execution, secret or token exfiltration, unauthorized pushes, and other token abuse. The fixed implementations in src/index.ts and src/conflibot.ts use execFile or spawn argument arrays, and the v2 line also uses numeric pull-request refs rather than branch names. This issue is fixed in versions 1.2.1 and 2.0.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-15T14:47:58.804Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/wktk/conflibot/security/advisories/GHSA-2qvg-qr73-mqxp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/wktk/conflibot/security/advisories/GHSA-2qvg-qr73-mqxp"
        },
        {
          "name": "https://github.com/wktk/conflibot/pull/329",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wktk/conflibot/pull/329"
        },
        {
          "name": "https://github.com/wktk/conflibot/commit/0107ac6a4575ea200d0b92287ea58f975be9505d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wktk/conflibot/commit/0107ac6a4575ea200d0b92287ea58f975be9505d"
        },
        {
          "name": "https://github.com/wktk/conflibot/commit/59e255c49c920fd6b67471ab9ef3bf194439a3f2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wktk/conflibot/commit/59e255c49c920fd6b67471ab9ef3bf194439a3f2"
        },
        {
          "name": "https://github.com/wktk/conflibot/releases/tag/v1.2.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wktk/conflibot/releases/tag/v1.2.1"
        },
        {
          "name": "https://github.com/wktk/conflibot/releases/tag/v2.0.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wktk/conflibot/releases/tag/v2.0.0"
        }
      ],
      "source": {
        "advisory": "GHSA-2qvg-qr73-mqxp",
        "discovery": "UNKNOWN"
      },
      "title": "Conflibot: Command injection via crafted pull request branch names under pull_request_target"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55158",
    "datePublished": "2026-09-15T14:47:58.804Z",
    "dateReserved": "2026-06-16T15:13:28.165Z",
    "dateUpdated": "2026-09-15T14:47:58.804Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-55158 (GCVE-0-2026-55158)

    Vulnerability from cvelistv5 – Published: 2026-09-15 14:47 – Updated: 2026-09-15 14:47
    VLAI
    Title
    Conflibot: Command injection via crafted pull request branch names under pull_request_target
    Summary
    Conflibot warns in advance when merging a pull request will cause conflicts in other open pull requests. Prior to 1.2.1, src/index.ts builds git checkout, git merge, and git format-patch commands by interpolating the attacker-controlled pull request head.ref value into strings passed to exec. In the documented pull_request_target configuration, an attacker can open a pull request, including from a fork, whose branch name contains shell metacharacters, and the workflow automatically interprets those characters as commands without maintainer interaction. The commands execute on a runner with base-repository secrets and a write-scoped GITHUB_TOKEN, allowing arbitrary command execution, secret or token exfiltration, unauthorized pushes, and other token abuse. The fixed implementations in src/index.ts and src/conflibot.ts use execFile or spawn argument arrays, and the v2 line also uses numeric pull-request refs rather than branch names. This issue is fixed in versions 1.2.1 and 2.0.0.
    Severity
    9.1 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    CWE
    • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    wktk conflibot Affected: < 1.2.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "conflibot",
          "vendor": "wktk",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.2.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Conflibot warns in advance when merging a pull request will cause conflicts in other open pull requests. Prior to 1.2.1, src/index.ts builds git checkout, git merge, and git format-patch commands by interpolating the attacker-controlled pull request head.ref value into strings passed to exec. In the documented pull_request_target configuration, an attacker can open a pull request, including from a fork, whose branch name contains shell metacharacters, and the workflow automatically interprets those characters as commands without maintainer interaction. The commands execute on a runner with base-repository secrets and a write-scoped GITHUB_TOKEN, allowing arbitrary command execution, secret or token exfiltration, unauthorized pushes, and other token abuse. The fixed implementations in src/index.ts and src/conflibot.ts use execFile or spawn argument arrays, and the v2 line also uses numeric pull-request refs rather than branch names. This issue is fixed in versions 1.2.1 and 2.0.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-15T14:47:58.804Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/wktk/conflibot/security/advisories/GHSA-2qvg-qr73-mqxp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/wktk/conflibot/security/advisories/GHSA-2qvg-qr73-mqxp"
        },
        {
          "name": "https://github.com/wktk/conflibot/pull/329",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wktk/conflibot/pull/329"
        },
        {
          "name": "https://github.com/wktk/conflibot/commit/0107ac6a4575ea200d0b92287ea58f975be9505d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wktk/conflibot/commit/0107ac6a4575ea200d0b92287ea58f975be9505d"
        },
        {
          "name": "https://github.com/wktk/conflibot/commit/59e255c49c920fd6b67471ab9ef3bf194439a3f2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wktk/conflibot/commit/59e255c49c920fd6b67471ab9ef3bf194439a3f2"
        },
        {
          "name": "https://github.com/wktk/conflibot/releases/tag/v1.2.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wktk/conflibot/releases/tag/v1.2.1"
        },
        {
          "name": "https://github.com/wktk/conflibot/releases/tag/v2.0.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/wktk/conflibot/releases/tag/v2.0.0"
        }
      ],
      "source": {
        "advisory": "GHSA-2qvg-qr73-mqxp",
        "discovery": "UNKNOWN"
      },
      "title": "Conflibot: Command injection via crafted pull request branch names under pull_request_target"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55158",
    "datePublished": "2026-09-15T14:47:58.804Z",
    "dateReserved": "2026-06-16T15:13:28.165Z",
    "dateUpdated": "2026-09-15T14:47:58.804Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}