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2 vulnerabilities found for yaml by symfony

CVE-2026-45305 (GCVE-0-2026-45305)
Vulnerability from cvelistv5
Published
2026-07-14 18:50
Modified
2026-07-15 14:03
Severity ?
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Summary
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, Symfony\Component\Yaml\Parser::cleanup() used regular expressions with overlapping quantifiers for YAML directive, comment, and document marker cleanup, allowing crafted input to make parsing hang for an arbitrarily long time. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.
References
Impacted products
Vendor Product Version
symfony symfony Version: < 5.4.52
Version: >= 6.0.0-BETA1, < 6.4.40
Version: >= 7.0.0-BETA1, < 7.4.12
Version: >= 8.0.0-BETA1, < 8.0.12
 Create a notification for this product.
   symfony yaml Version: < 5.4.52
Version: >= 6.0.0-BETA1, < 6.4.40
Version: >= 7.0.0-BETA1, < 7.4.12
Version: >= 8.0.0-BETA1, < 8.0.12
 Create a notification for this product.
Show details on NVD website

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{
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      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-45305",
                "options": [
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                  },
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-15T14:03:51.536649Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    "cna": {
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          "vendor": "symfony",
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              "version": "\u003c 5.4.52"
            },
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              "status": "affected",
              "version": "\u003e= 7.0.0-BETA1, \u003c 7.4.12"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.0.0-BETA1, \u003c 8.0.12"
            }
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        },
        {
          "product": "yaml",
          "vendor": "symfony",
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              "version": "\u003c 5.4.52"
            },
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        }
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            "baseSeverity": "HIGH",
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            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
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            "vulnIntegrityImpact": "NONE"
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        },
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        "discovery": "UNKNOWN"
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      "title": "Symfony: YAML Parser ReDoS via Catastrophic Backtracking in Parser::cleanup() Regex"
    }
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    "dateReserved": "2026-05-11T20:14:43.202Z",
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    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-45304 (GCVE-0-2026-45304)
Vulnerability from cvelistv5
Published
2026-07-14 18:48
Modified
2026-07-14 19:13
Severity ?
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-776 - Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
Summary
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, Symfony\Component\Yaml\Parser resolved YAML collection aliases recursively, allowing a small untrusted YAML input to expand into a multi-gigabyte structure and exhaust memory. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.
References
Impacted products
Vendor Product Version
symfony symfony Version: < 5.4.52
Version: >= 6.0.0-BETA1, < 6.4.40
Version: >= 7.0.0-BETA1, < 7.4.12
Version: >= 8.0.0-BETA1, < 8.0.12
 Create a notification for this product.
   symfony yaml Version: < 5.4.52
Version: >= 6.0.0-BETA1, < 6.4.40
Version: >= 7.0.0-BETA1, < 7.4.12
Version: >= 8.0.0-BETA1, < 8.0.12
 Create a notification for this product.
Show details on NVD website

To clipboard 

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-45304",
                "options": [
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                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-14T19:13:27.727393Z",
                "version": "2.0.3"
              },
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          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-14T19:13:39.323Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "product": "symfony",
          "vendor": "symfony",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 5.4.52"
            },
            {
              "status": "affected",
              "version": "\u003e= 6.0.0-BETA1, \u003c 6.4.40"
            },
            {
              "status": "affected",
              "version": "\u003e= 7.0.0-BETA1, \u003c 7.4.12"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.0.0-BETA1, \u003c 8.0.12"
            }
          ]
        },
        {
          "product": "yaml",
          "vendor": "symfony",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 5.4.52"
            },
            {
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              "version": "\u003e= 6.0.0-BETA1, \u003c 6.4.40"
            },
            {
              "status": "affected",
              "version": "\u003e= 7.0.0-BETA1, \u003c 7.4.12"
            },
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            }
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        }
      ],
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      "source": {
        "advisory": "GHSA-4qpc-3hr4-r2p4",
        "discovery": "UNKNOWN"
      },
      "title": "Symfony: YAML Parser Exponential Memory Allocation via Recursive Collection-Alias Expansion (\"Billion Laughs\")"
    }
  },
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