CVE-2026-102827 (GCVE-0-2026-102827)

Vulnerability from cvelistv5 – Published: 2026-09-29 18:39 – Updated: 2026-09-29 18:39
VLAI
Title
simple-git: unsafe-operations plugin bypass via git long-option abbreviation (--receive-p/--exe) -> command execution (residual of CVE-2026-28291)
Summary
simple-git, an interface for running git commands in any node.js application, enables applications to execute Git operations from JavaScript. Prior to 4.0.0, the default blockUnsafeOperationsPlugin compares parsed option names with literal dangerous option spellings while Git accepts unambiguous long-option abbreviations. Attacker-influenced push arguments such as abbreviated --receive-pack or --exec forms can therefore bypass detectVulnerableFlags, reach git push against a local or file remote or an attacker-influenced receive-pack target, and cause Git to invoke an attacker-selected command in consumers that expose those arguments. The clone-side abbreviation handling does not protect the push path. This issue is fixed in 4.0.0.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')
  • CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Assigner
References
Impacted products
Vendor Product Version CPE status
steveukx git-js Affected: < 4.0.0
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "git-js",
          "vendor": "steveukx",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.0.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "simple-git, an interface for running git commands in any node.js application, enables applications to execute Git operations from JavaScript. Prior to 4.0.0, the default blockUnsafeOperationsPlugin compares parsed option names with literal dangerous option spellings while Git accepts unambiguous long-option abbreviations. Attacker-influenced push arguments such as abbreviated --receive-pack or --exec forms can therefore bypass detectVulnerableFlags, reach git push against a local or file remote or an attacker-influenced receive-pack target, and cause Git to invoke an attacker-selected command in consumers that expose those arguments. The clone-side abbreviation handling does not protect the push path. This issue is fixed in 4.0.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-77",
              "description": "CWE-77: Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-88",
              "description": "CWE-88: Improper Neutralization of Argument Delimiters in a Command (\u0027Argument Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-29T18:39:57.688Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/steveukx/git-js/security/advisories/GHSA-858h-whjf-mvg5",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/steveukx/git-js/security/advisories/GHSA-858h-whjf-mvg5"
        },
        {
          "name": "https://github.com/steveukx/git-js/pull/1193",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/steveukx/git-js/pull/1193"
        },
        {
          "name": "https://github.com/steveukx/git-js/commit/98864c678444d9336357c844efa4fd5a7984c0d7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/steveukx/git-js/commit/98864c678444d9336357c844efa4fd5a7984c0d7"
        },
        {
          "name": "https://github.com/steveukx/git-js/releases/tag/simple-git@4.0.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/steveukx/git-js/releases/tag/simple-git@4.0.0"
        }
      ],
      "source": {
        "advisory": "GHSA-858h-whjf-mvg5",
        "discovery": "UNKNOWN"
      },
      "title": "simple-git: unsafe-operations plugin bypass via git long-option abbreviation (--receive-p/--exe) -\u003e command execution (residual of CVE-2026-28291)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-102827",
    "datePublished": "2026-09-29T18:39:57.688Z",
    "dateReserved": "2026-09-29T17:25:25.265Z",
    "dateUpdated": "2026-09-29T18:39:57.688Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-102827",
      "date": "2026-09-30",
      "epss": "0.00363",
      "percentile": "0.2772"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "git-js",
                "vendor": "steveukx",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 4.0.0"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "simple-git, an interface for running git commands in any node.js application, enables applications to execute Git operations from JavaScript. Prior to 4.0.0, the default blockUnsafeOperationsPlugin compares parsed option names with literal dangerous option spellings while Git accepts unambiguous long-option abbreviations. Attacker-influenced push arguments such as abbreviated --receive-pack or --exec forms can therefore bypass detectVulnerableFlags, reach git push against a local or file remote or an attacker-influenced receive-pack target, and cause Git to invoke an attacker-selected command in consumers that expose those arguments. The clone-side abbreviation handling does not protect the push path. This issue is fixed in 4.0.0."
          }
        ],
        "id": "CVE-2026-102827",
        "lastModified": "2026-09-30T19:56:45.443",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.1,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 5.9,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-09-29T19:17:25.050",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/steveukx/git-js/commit/98864c678444d9336357c844efa4fd5a7984c0d7"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/steveukx/git-js/pull/1193"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/steveukx/git-js/releases/tag/simple-git@4.0.0"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/steveukx/git-js/security/advisories/GHSA-858h-whjf-mvg5"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Undergoing Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-77"
              },
              {
                "lang": "en",
                "value": "CWE-88"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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