CVE-2026-47767 (GCVE-0-2026-47767)

Vulnerability from cvelistv5 – Published: 2026-07-14 18:38 – Updated: 2026-07-14 18:38
VLAI
Title
Symfony: SymfonyRuntime CVE-2024-50340 Patch Bypass: Web Requests Can Still Set APP_ENV/APP_DEBUG via parse_str/SAPI Argv Mismatch
Summary
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 5.4.46 until 5.4.52, 6.4.40, 7.4.12, and 8.0.12, the CVE-2024-50340 fix gated runtime argv parsing on empty($_GET), but parse_str() and the web SAPI can disagree, allowing a crafted query string to leave $_GET empty while $_SERVER['argv'] still carries attacker-controlled --env or --no-debug flags that change APP_ENV or APP_DEBUG. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.
Severity
8.3 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-436 - Interpretation Conflict
Assigner
References
Impacted products
Vendor Product Version
symfony symfony Affected: >= 5.4.46, < 5.4.52
Affected: >= 6.4.14, < 6.4.40
Affected: >= 7.1.7, < 7.4.12
Affected: >= 8.0.0-BETA1, < 8.0.12
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symfony runtime Affected: >= 5.4.46, < 5.4.52
Affected: >= 6.4.14, < 6.4.40
Affected: >= 7.1.7, < 7.4.12
Affected: >= 8.0.0-BETA1, < 8.0.12
Create a notification for this product.
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{
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      "affected": [
        {
          "product": "symfony",
          "vendor": "symfony",
          "versions": [
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              "status": "affected",
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            },
            {
              "status": "affected",
              "version": "\u003e= 7.1.7, \u003c 7.4.12"
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              "version": "\u003e= 6.4.14, \u003c 6.4.40"
            },
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              "status": "affected",
              "version": "\u003e= 7.1.7, \u003c 7.4.12"
            },
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          "value": "Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 5.4.46 until 5.4.52, 6.4.40, 7.4.12, and 8.0.12, the CVE-2024-50340 fix gated runtime argv parsing on empty($_GET), but parse_str() and the web SAPI can disagree, allowing a crafted query string to leave $_GET empty while $_SERVER[\u0027argv\u0027] still carries attacker-controlled --env or --no-debug flags that change APP_ENV or APP_DEBUG. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12."
        }
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            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
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            "version": "4.0",
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        "shortName": "GitHub_M"
      },
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          "tags": [
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          "url": "https://github.com/symfony/symfony/security/advisories/GHSA-fqc7-9xjw-jrh3"
        },
        {
          "name": "https://github.com/symfony/symfony/commit/3228c3806ee511008bea19a95084d460b17e5d25",
          "tags": [
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          "url": "https://github.com/symfony/symfony/commit/3228c3806ee511008bea19a95084d460b17e5d25"
        },
        {
          "name": "https://github.com/symfony/symfony/releases/tag/v5.4.52",
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          "url": "https://github.com/symfony/symfony/releases/tag/v5.4.52"
        },
        {
          "name": "https://github.com/symfony/symfony/releases/tag/v6.4.40",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/symfony/symfony/releases/tag/v6.4.40"
        },
        {
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          "tags": [
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          "url": "https://github.com/symfony/symfony/releases/tag/v7.4.12"
        },
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          "tags": [
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          ],
          "url": "https://github.com/symfony/symfony/releases/tag/v8.0.12"
        }
      ],
      "source": {
        "advisory": "GHSA-fqc7-9xjw-jrh3",
        "discovery": "UNKNOWN"
      },
      "title": "Symfony: SymfonyRuntime CVE-2024-50340 Patch Bypass: Web Requests Can Still Set APP_ENV/APP_DEBUG via parse_str/SAPI Argv Mismatch"
    }
  },
  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-47767",
    "datePublished": "2026-07-14T18:38:36.513Z",
    "dateReserved": "2026-05-19T22:36:16.882Z",
    "dateUpdated": "2026-07-14T18:38:36.513Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-47767",
      "date": "2026-06-14",
      "epss": "0.00095",
      "percentile": "0.26549"
    },
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  }
}



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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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