Vulnerability-Lookup

CVE-2026-24739 (GCVE-0-2026-24739)

Vulnerability from cvelistv5 – Published: 2026-01-28 20:25 – Updated: 2026-01-29 18:01

Title

Symfony has incorrect argument escaping under MSYS2/Git Bash on Windows that can lead to destructive file operations

Summary

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to versions 5.4.51, 6.4.33, 7.3.11, 7.4.5, and 8.0.5, the Symfony Process component did not correctly treat some characters (notably `=`) as “special” when escaping arguments on Windows. When PHP is executed from an MSYS2-based environment (e.g. Git Bash) and Symfony Process spawns native Windows executables, MSYS2’s argument/path conversion can mis-handle unquoted arguments containing these characters. This can cause the spawned process to receive corrupted/truncated arguments compared to what Symfony intended. If an application (or tooling such as Composer scripts) uses Symfony Process to invoke file-management commands (e.g. `rmdir`, `del`, etc.) with a path argument containing `=`, the MSYS2 conversion layer may alter the argument at runtime. In affected setups this can result in operations being performed on an unintended path, up to and including deletion of the contents of a broader directory or drive. The issue is particularly relevant when untrusted input can influence process arguments (directly or indirectly, e.g. via repository paths, extracted archive paths, temporary directories, or user-controlled configuration). Versions 5.4.51, 6.4.33, 7.3.11, 7.4.5, and 8.0.5 contains a patch for the issue. Some workarounds are available. Avoid running PHP/one's own tooling from MSYS2-based shells on Windows; prefer cmd.exe or PowerShell for workflows that spawn native executables. Avoid passing paths containing `=` (and similar MSYS2-sensitive characters) to Symfony Process when operating under Git Bash/MSYS2. Where applicable, configure MSYS2 to disable or restrict argument conversion (e.g. via `MSYS2_ARG_CONV_EXCL`), understanding this may affect other tooling behavior.

Severity ?

6.3 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H

CWE

CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/symfony/symfony/security/advis…	x_refsource_CONFIRM
	https://github.com/symfony/symfony/issues/62921	x_refsource_MISC
	https://github.com/symfony/symfony/pull/63164	x_refsource_MISC
	https://github.com/symfony/symfony/commit/3520393…	x_refsource_MISC
	https://github.com/symfony/symfony/commit/ec154f6…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	symfony	symfony	Affected: < 5.4.51 Affected: >= 6.4.0, < 6.4.33 Affected: >= 7.3.0, < 7.3.11 Affected: >= 7.4.0, < 7.4.5 Affected: >= 8.0.0 , < 8.0.5

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-24739",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-29T16:03:49.659737Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-29T18:01:36.510Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "symfony",
          "vendor": "symfony",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 5.4.51"
            },
            {
              "status": "affected",
              "version": "\u003e= 6.4.0, \u003c 6.4.33"
            },
            {
              "status": "affected",
              "version": "\u003e= 7.3.0, \u003c 7.3.11"
            },
            {
              "status": "affected",
              "version": "\u003e= 7.4.0, \u003c 7.4.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.0.0 , \u003c 8.0.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to versions 5.4.51, 6.4.33, 7.3.11, 7.4.5, and 8.0.5, the Symfony Process component did not correctly treat some characters (notably `=`) as \u201cspecial\u201d when escaping arguments on Windows. When PHP is executed from an MSYS2-based environment (e.g. Git Bash) and Symfony Process spawns native Windows executables, MSYS2\u2019s argument/path conversion can mis-handle unquoted arguments containing these characters. This can cause the spawned process to receive corrupted/truncated arguments compared to what Symfony intended. If an application (or tooling such as Composer scripts) uses Symfony Process to invoke file-management commands (e.g. `rmdir`, `del`, etc.) with a path argument containing `=`, the MSYS2 conversion layer may alter the argument at runtime. In affected setups this can result in operations being performed on an unintended path, up to and including deletion of the contents of a broader directory or drive. The issue is particularly relevant when untrusted input can influence process arguments (directly or indirectly, e.g. via repository paths, extracted archive paths, temporary directories, or user-controlled configuration). Versions 5.4.51, 6.4.33, 7.3.11, 7.4.5, and 8.0.5 contains a patch for the issue. Some workarounds are available. Avoid running PHP/one\u0027s own tooling from MSYS2-based shells on Windows; prefer cmd.exe or PowerShell for workflows that spawn native executables. Avoid passing paths containing `=` (and similar MSYS2-sensitive characters) to Symfony Process when operating under Git Bash/MSYS2. Where applicable, configure MSYS2 to disable or restrict argument conversion (e.g. via `MSYS2_ARG_CONV_EXCL`), understanding this may affect other tooling behavior."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-88",
              "description": "CWE-88: Improper Neutralization of Argument Delimiters in a Command (\u0027Argument Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-28T20:25:21.500Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/symfony/symfony/security/advisories/GHSA-r39x-jcww-82v6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/symfony/symfony/security/advisories/GHSA-r39x-jcww-82v6"
        },
        {
          "name": "https://github.com/symfony/symfony/issues/62921",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/symfony/symfony/issues/62921"
        },
        {
          "name": "https://github.com/symfony/symfony/pull/63164",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/symfony/symfony/pull/63164"
        },
        {
          "name": "https://github.com/symfony/symfony/commit/35203939050e5abd3caf2202113b00cab5d379b3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/symfony/symfony/commit/35203939050e5abd3caf2202113b00cab5d379b3"
        },
        {
          "name": "https://github.com/symfony/symfony/commit/ec154f6f95f8c60f831998ec4d246a857e9d179b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/symfony/symfony/commit/ec154f6f95f8c60f831998ec4d246a857e9d179b"
        }
      ],
      "source": {
        "advisory": "GHSA-r39x-jcww-82v6",
        "discovery": "UNKNOWN"
      },
      "title": "Symfony has incorrect argument escaping under MSYS2/Git Bash on Windows that can lead to destructive file operations"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-24739",
    "datePublished": "2026-01-28T20:25:21.500Z",
    "dateReserved": "2026-01-26T19:06:16.059Z",
    "dateUpdated": "2026-01-29T18:01:36.510Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-24739\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-01-28T21:16:11.750\",\"lastModified\":\"2026-01-29T16:31:00.867\",\"vulnStatus\":\"Undergoing Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to versions 5.4.51, 6.4.33, 7.3.11, 7.4.5, and 8.0.5, the Symfony Process component did not correctly treat some characters (notably `=`) as \u201cspecial\u201d when escaping arguments on Windows. When PHP is executed from an MSYS2-based environment (e.g. Git Bash) and Symfony Process spawns native Windows executables, MSYS2\u2019s argument/path conversion can mis-handle unquoted arguments containing these characters. This can cause the spawned process to receive corrupted/truncated arguments compared to what Symfony intended. If an application (or tooling such as Composer scripts) uses Symfony Process to invoke file-management commands (e.g. `rmdir`, `del`, etc.) with a path argument containing `=`, the MSYS2 conversion layer may alter the argument at runtime. In affected setups this can result in operations being performed on an unintended path, up to and including deletion of the contents of a broader directory or drive. The issue is particularly relevant when untrusted input can influence process arguments (directly or indirectly, e.g. via repository paths, extracted archive paths, temporary directories, or user-controlled configuration). Versions 5.4.51, 6.4.33, 7.3.11, 7.4.5, and 8.0.5 contains a patch for the issue. Some workarounds are available. Avoid running PHP/one\u0027s own tooling from MSYS2-based shells on Windows; prefer cmd.exe or PowerShell for workflows that spawn native executables. Avoid passing paths containing `=` (and similar MSYS2-sensitive characters) to Symfony Process when operating under Git Bash/MSYS2. Where applicable, configure MSYS2 to disable or restrict argument conversion (e.g. via `MSYS2_ARG_CONV_EXCL`), understanding this may affect other tooling behavior.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H\",\"baseScore\":6.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-88\"}]}],\"references\":[{\"url\":\"https://github.com/symfony/symfony/commit/35203939050e5abd3caf2202113b00cab5d379b3\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/symfony/symfony/commit/ec154f6f95f8c60f831998ec4d246a857e9d179b\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/symfony/symfony/issues/62921\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/symfony/symfony/pull/63164\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/symfony/symfony/security/advisories/GHSA-r39x-jcww-82v6\",\"source\":\"security-advisories@github.com\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-24739\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-29T16:03:49.659737Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-29T16:03:55.291Z\"}}], \"cna\": {\"title\": \"Symfony has incorrect argument escaping under MSYS2/Git Bash on Windows that can lead to destructive file operations\", \"source\": {\"advisory\": \"GHSA-r39x-jcww-82v6\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.3, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"symfony\", \"product\": \"symfony\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 5.4.51\"}, {\"status\": \"affected\", \"version\": \"\u003e= 6.4.0, \u003c 6.4.33\"}, {\"status\": \"affected\", \"version\": \"\u003e= 7.3.0, \u003c 7.3.11\"}, {\"status\": \"affected\", \"version\": \"\u003e= 7.4.0, \u003c 7.4.5\"}, {\"status\": \"affected\", \"version\": \"\u003e= 8.0.0 , \u003c 8.0.5\"}]}], \"references\": [{\"url\": \"https://github.com/symfony/symfony/security/advisories/GHSA-r39x-jcww-82v6\", \"name\": \"https://github.com/symfony/symfony/security/advisories/GHSA-r39x-jcww-82v6\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/symfony/symfony/issues/62921\", \"name\": \"https://github.com/symfony/symfony/issues/62921\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/symfony/symfony/pull/63164\", \"name\": \"https://github.com/symfony/symfony/pull/63164\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/symfony/symfony/commit/35203939050e5abd3caf2202113b00cab5d379b3\", \"name\": \"https://github.com/symfony/symfony/commit/35203939050e5abd3caf2202113b00cab5d379b3\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/symfony/symfony/commit/ec154f6f95f8c60f831998ec4d246a857e9d179b\", \"name\": \"https://github.com/symfony/symfony/commit/ec154f6f95f8c60f831998ec4d246a857e9d179b\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to versions 5.4.51, 6.4.33, 7.3.11, 7.4.5, and 8.0.5, the Symfony Process component did not correctly treat some characters (notably `=`) as \\u201cspecial\\u201d when escaping arguments on Windows. When PHP is executed from an MSYS2-based environment (e.g. Git Bash) and Symfony Process spawns native Windows executables, MSYS2\\u2019s argument/path conversion can mis-handle unquoted arguments containing these characters. This can cause the spawned process to receive corrupted/truncated arguments compared to what Symfony intended. If an application (or tooling such as Composer scripts) uses Symfony Process to invoke file-management commands (e.g. `rmdir`, `del`, etc.) with a path argument containing `=`, the MSYS2 conversion layer may alter the argument at runtime. In affected setups this can result in operations being performed on an unintended path, up to and including deletion of the contents of a broader directory or drive. The issue is particularly relevant when untrusted input can influence process arguments (directly or indirectly, e.g. via repository paths, extracted archive paths, temporary directories, or user-controlled configuration). Versions 5.4.51, 6.4.33, 7.3.11, 7.4.5, and 8.0.5 contains a patch for the issue. Some workarounds are available. Avoid running PHP/one\u0027s own tooling from MSYS2-based shells on Windows; prefer cmd.exe or PowerShell for workflows that spawn native executables. Avoid passing paths containing `=` (and similar MSYS2-sensitive characters) to Symfony Process when operating under Git Bash/MSYS2. Where applicable, configure MSYS2 to disable or restrict argument conversion (e.g. via `MSYS2_ARG_CONV_EXCL`), understanding this may affect other tooling behavior.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-88\", \"description\": \"CWE-88: Improper Neutralization of Argument Delimiters in a Command (\u0027Argument Injection\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-01-28T20:25:21.500Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-24739\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-29T18:01:36.510Z\", \"dateReserved\": \"2026-01-26T19:06:16.059Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-01-28T20:25:21.500Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-24739

Vulnerability from fkie_nvd - Published: 2026-01-28 21:16 - Updated: 2026-01-29 16:31

Severity ?

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

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/symfony/symfony/commit/35203939050e5abd3caf2202113b00cab5d379b3
	security-advisories@github.com	https://github.com/symfony/symfony/commit/ec154f6f95f8c60f831998ec4d246a857e9d179b
	security-advisories@github.com	https://github.com/symfony/symfony/issues/62921
	security-advisories@github.com	https://github.com/symfony/symfony/pull/63164
	security-advisories@github.com	https://github.com/symfony/symfony/security/advisories/GHSA-r39x-jcww-82v6

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to versions 5.4.51, 6.4.33, 7.3.11, 7.4.5, and 8.0.5, the Symfony Process component did not correctly treat some characters (notably `=`) as \u201cspecial\u201d when escaping arguments on Windows. When PHP is executed from an MSYS2-based environment (e.g. Git Bash) and Symfony Process spawns native Windows executables, MSYS2\u2019s argument/path conversion can mis-handle unquoted arguments containing these characters. This can cause the spawned process to receive corrupted/truncated arguments compared to what Symfony intended. If an application (or tooling such as Composer scripts) uses Symfony Process to invoke file-management commands (e.g. `rmdir`, `del`, etc.) with a path argument containing `=`, the MSYS2 conversion layer may alter the argument at runtime. In affected setups this can result in operations being performed on an unintended path, up to and including deletion of the contents of a broader directory or drive. The issue is particularly relevant when untrusted input can influence process arguments (directly or indirectly, e.g. via repository paths, extracted archive paths, temporary directories, or user-controlled configuration). Versions 5.4.51, 6.4.33, 7.3.11, 7.4.5, and 8.0.5 contains a patch for the issue. Some workarounds are available. Avoid running PHP/one\u0027s own tooling from MSYS2-based shells on Windows; prefer cmd.exe or PowerShell for workflows that spawn native executables. Avoid passing paths containing `=` (and similar MSYS2-sensitive characters) to Symfony Process when operating under Git Bash/MSYS2. Where applicable, configure MSYS2 to disable or restrict argument conversion (e.g. via `MSYS2_ARG_CONV_EXCL`), understanding this may affect other tooling behavior."
    }
  ],
  "id": "CVE-2026-24739",
  "lastModified": "2026-01-29T16:31:00.867",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-01-28T21:16:11.750",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/symfony/symfony/commit/35203939050e5abd3caf2202113b00cab5d379b3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/symfony/symfony/commit/ec154f6f95f8c60f831998ec4d246a857e9d179b"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/symfony/symfony/issues/62921"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/symfony/symfony/pull/63164"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/symfony/symfony/security/advisories/GHSA-r39x-jcww-82v6"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-88"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

GHSA-R39X-JCWW-82V6

Vulnerability from github – Published: 2026-01-28 21:28 – Updated: 2026-01-29 03:50

Summary

Symfony's incorrect argument escaping under MSYS2/Git Bash can lead to destructive file operations on Windows

Details

Summary

The Symfony Process component did not correctly treat some characters (notably =) as “special” when escaping arguments on Windows. When PHP is executed from an MSYS2-based environment (e.g. Git Bash) and Symfony Process spawns native Windows executables, MSYS2’s argument/path conversion can mishandle unquoted arguments containing these characters.

This can cause the spawned process to receive corrupted/truncated arguments compared to what Symfony intended.

Impact

If an application (or tooling such as Composer scripts) uses Symfony Process to invoke file-management commands (e.g. rmdir, del, etc.) with a path argument containing =, the MSYS2 conversion layer may alter the argument at runtime. In affected setups this can result in operations being performed on an unintended path, up to and including deletion of the contents of a broader directory or drive.

The issue is particularly relevant when untrusted input can influence process arguments (directly or indirectly, e.g. via repository paths, extracted archive paths, temporary directories, or user-controlled configuration).

Resolution

Upgrade to a Symfony release that includes the fix from symfony/symfony#63164 (which updates Windows argument escaping to ensure arguments containing = and other MSYS2-sensitive characters are properly quoted/escaped). The patch for branch 5.4 is available at https://github.com/symfony/symfony/commit/ec154f6f95f8c60f831998ec4d246a857e9d179b

Workarounds / Mitigations

Avoid running PHP/your tooling from MSYS2-based shells on Windows; prefer cmd.exe or PowerShell for workflows that spawn native executables. Avoid passing paths containing = (and similar MSYS2-sensitive characters) to Symfony Process when operating under Git Bash/MSYS2. Where applicable, configure MSYS2 to disable or restrict argument conversion (e.g. via MSYS2_ARG_CONV_EXCL), understanding this may affect other tooling behavior.

Severity ?

6.3 (Medium)


                  
                    CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/process"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4.51"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/process"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.4"
            },
            {
              "fixed": "6.4.33"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/process"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.3"
            },
            {
              "fixed": "7.3.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/process"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.4"
            },
            {
              "fixed": "7.4.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/process"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.0"
            },
            {
              "fixed": "8.0.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/symfony"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4.51"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/symfony"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.4"
            },
            {
              "fixed": "6.4.33"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/symfony"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.3"
            },
            {
              "fixed": "7.3.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/symfony"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.4"
            },
            {
              "fixed": "7.4.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/symfony"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.0"
            },
            {
              "fixed": "8.0.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-24739"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-88"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-28T21:28:10Z",
    "nvd_published_at": "2026-01-28T21:16:11Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nThe Symfony Process component did not correctly treat some characters (notably `=`) as \u201cspecial\u201d when escaping arguments on Windows. When PHP is executed from an MSYS2-based environment (e.g. Git Bash) and Symfony Process spawns native Windows executables, MSYS2\u2019s argument/path conversion can mishandle unquoted arguments containing these characters.\n\nThis can cause the spawned process to receive corrupted/truncated arguments compared to what Symfony intended.\n\n### Impact\nIf an application (or tooling such as Composer scripts) uses Symfony Process to invoke file-management commands (e.g. `rmdir`, `del`, etc.) with a path argument containing `=`, the MSYS2 conversion layer may alter the argument at runtime. In affected setups this can result in operations being performed on an unintended path, up to and including deletion of the contents of a broader directory or drive.\n\nThe issue is particularly relevant when untrusted input can influence process arguments (directly or indirectly, e.g. via repository paths, extracted archive paths, temporary directories, or user-controlled configuration).\n\n### Resolution\nUpgrade to a Symfony release that includes the fix from symfony/symfony#63164 (which updates Windows argument escaping to ensure arguments containing = and other MSYS2-sensitive characters are properly quoted/escaped).\nThe patch for branch 5.4 is available at https://github.com/symfony/symfony/commit/ec154f6f95f8c60f831998ec4d246a857e9d179b\n\n### Workarounds / Mitigations\nAvoid running PHP/your tooling from MSYS2-based shells on Windows; prefer cmd.exe or PowerShell for workflows that spawn native executables.\nAvoid passing paths containing `=` (and similar MSYS2-sensitive characters) to Symfony Process when operating under Git Bash/MSYS2.\nWhere applicable, configure MSYS2 to disable or restrict argument conversion (e.g. via `MSYS2_ARG_CONV_EXCL`), understanding this may affect other tooling behavior.",
  "id": "GHSA-r39x-jcww-82v6",
  "modified": "2026-01-29T03:50:41Z",
  "published": "2026-01-28T21:28:10Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/security/advisories/GHSA-r39x-jcww-82v6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24739"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/issues/62921"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/pull/63164"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/commit/35203939050e5abd3caf2202113b00cab5d379b3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/symfony/commit/ec154f6f95f8c60f831998ec4d246a857e9d179b"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/symfony/symfony"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Symfony\u0027s incorrect argument escaping under MSYS2/Git Bash can lead to destructive file operations on Windows"
}

CERTFR-2026-AVI-0098

Vulnerability from certfr_avis - Published: 2026-01-28 - Updated: 2026-01-28

Une vulnérabilité a été découverte dans les produits Symfony. Elle permet à un attaquant de provoquer une atteinte à l'intégrité des données.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
Symfony	Symfony	Symphony versions antérieures à 5.4.51 pour Windows
Symfony	Symfony	Symphony versions 7.4.x antérieures à 7.4.5 pour Windows
Symfony	Symfony	Symphony versions 7.3.x antérieures à 7.3.11 pour Windows
Symfony	Symfony	Symphony versions 8.0.x antérieures à 8.0.5 pour Windows
Symfony	Symfony	Symphony versions 6.4.x antérieures à 6.4.33 pour Windows

References

Title

Publication Time

Sightings

Author	Source	Type	Date

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.

Action not permitted

CVE-2026-24739 (GCVE-0-2026-24739)

FKIE_CVE-2026-24739

GHSA-R39X-JCWW-82V6

Summary

Impact

Resolution

Workarounds / Mitigations

CERTFR-2026-AVI-0098

Solutions

Tags

Sightings

Nomenclature