{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-123824", "assignerOrgId": "596c5446-0ce5-4ba2-aa66-48b3b757a647", "state": "PUBLISHED", "assignerShortName": "Checkmarx", "dateReserved": "2026-11-06T15:59:52.152Z", "datePublished": "2026-11-06T17:19:24.750Z", "dateUpdated": "2026-11-06T17:19:24.750Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "596c5446-0ce5-4ba2-aa66-48b3b757a647", "shortName": "Checkmarx", "dateUpdated": "2026-11-06T17:19:24.750Z"}, "title": "Symfony: XXE (Local File Read) in Config XmlUtils::parse() via validateOnParse = true", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-611", "description": "CWE-611 Improper Restriction of XML External Entity Reference", "type": "CWE"}]}], "affected": [{"vendor": "sensiolabs", "product": "symfony", "collectionURL": "https://packagist.org/packages/symfony/config", "packageName": "symfony/config", "repo": "https://github.com/symfony/config", "modules": ["Symfony\\Component\\Config\\Util\\XmlUtils::parse"], "versions": [{"status": "affected", "version": "0", "lessThan": "5.4.56", "versionType": "git"}, {"status": "affected", "version": "6.0.0", "lessThan": "6.4.50", "versionType": "git"}, {"status": "affected", "version": "7.0.0", "lessThan": "7.4.23", "versionType": "git"}, {"status": "affected", "version": "8.0.0", "lessThan": "8.1.11", "versionType": "git"}], "defaultStatus": "unaffected"}], "cpeApplicability": [{"operator": "OR", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*", "versionStartIncluding": "0", "versionEndExcluding": "5.4.56"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0.0", "versionEndExcluding": "6.4.50"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0.0", "versionEndExcluding": "7.4.23"}, {"vulnerable": true, "criteria": "cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0.0", "versionEndExcluding": "8.1.11"}]}]}], "descriptions": [{"lang": "en", "value": "The Symfony Config component\u00a0XmlUtils::parse()\u00a0enables DTD validation before rejecting documents that carry a doctype, allowing\u00a0XML external entity (XXE) injection in Symfony versions prior to 5.4.56, 6.x prior to 6.4.50, 7.x prior to 7.4.23, and 8.x prior to 8.1.11. A remote attacker who can supply XML to this method can determine whether local files exist, cause a denial of service, and, in some configurations, exfiltrate local file content via a crafted XML document whose doctype declares an external\u00a0file://\u00a0entity.\nXmlUtils::parse()\u00a0sets\u00a0$dom->validateOnParse = true\u00a0before calling\u00a0loadXML()\u00a0and only rejects documents carrying a doctype afterwards. Enabling DTD validation makes libxml resolve external entities during\u00a0loadXML(), and\u00a0LIBXML_NONET\u00a0blocks\u00a0http://\u00a0but not\u00a0file://, so a\u00a0file://\u00a0entity is read from disk before the doctype rejection runs. The content of the file is not returned to the caller, but the distinct libxml error for a missing path reveals whether a file exists, and an entity pointing at a large or slow file causes a denial of service. If the application registers a network-capable stream wrapper such as\u00a0s3://, a parameter entity can also send the content of a local file to an external server.\u00a0This is the same issue as CVE-2026-45071, which was fixed in the\u00a0DomCrawler\u00a0component but not in\u00a0Config.\n\nApplications are affected if they pass untrusted XML to\u00a0XmlUtils::parse()\u00a0directly. The Symfony components that call it process developer-provided or operator-configured sources, such as configuration files and the XLIFF documents fetched by the translation providers.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "The Symfony Config component&nbsp;<code>XmlUtils::parse()</code>&nbsp;enables DTD validation before rejecting documents that carry a doctype, allowing&nbsp;XML external entity (XXE) injection in Symfony versions prior to 5.4.56, 6.x prior to 6.4.50, 7.x prior to 7.4.23, and 8.x prior to 8.1.11. A remote attacker who can supply XML to this method can determine whether local files exist, cause a denial of service, and, in some configurations, exfiltrate local file content via a crafted XML document whose doctype declares an external&nbsp;<code>file://</code>&nbsp;entity.<br><div><span>XmlUtils::parse()</span>&nbsp;sets&nbsp;<code>$dom-&gt;validateOnParse = true</code>&nbsp;before calling&nbsp;<code>loadXML()</code>&nbsp;and only rejects documents carrying a doctype afterwards. Enabling DTD validation makes libxml resolve external entities during&nbsp;<code>loadXML()</code>, and&nbsp;<code>LIBXML_NONET</code>&nbsp;blocks&nbsp;<code>http://</code>&nbsp;but not&nbsp;<code>file://</code>, so a&nbsp;<code>file://</code>&nbsp;entity is read from disk before the doctype rejection runs. The content of the file is not returned to the caller, but the distinct libxml error for a missing path reveals whether a file exists, and an entity pointing at a large or slow file causes a denial of service. If the application registers a network-capable stream wrapper such as&nbsp;<code>s3://</code>, a parameter entity can also send the content of a local file to an external server.&nbsp;This is the same issue as CVE-2026-45071, which was fixed in the&nbsp;<code>DomCrawler</code>&nbsp;component but not in&nbsp;<code>Config</code>.</div><div>Applications are affected if they pass untrusted XML to&nbsp;<code>XmlUtils::parse()</code>&nbsp;directly. The Symfony components that call it process developer-provided or operator-configured sources, such as configuration files and the XLIFF documents fetched by the translation providers.</div>"}]}], "references": [{"url": "https://github.com/symfony/symfony/security/advisories/GHSA-5jff-8h8q-r5qx", "tags": ["third-party-advisory"]}, {"url": "https://github.com/symfony/symfony/commit/334ef21a6039355c05b123e7df60699be0e28da3", "tags": ["patch"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "LOW", "baseScore": 2.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"}}], "credits": [{"lang": "en", "value": "Prithiv Kumaravel from ProjectDiscovery", "type": "reporter"}, {"lang": "en", "value": "Bj\u00f6rn Meyer from Shopware AG", "type": "reporter"}, {"lang": "en", "value": "Nicolas Grekas", "type": "remediation developer"}], "source": {"advisory": "GHSA-5jff-8h8q-r5qx", "discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://packagist.org/packages/symfony/config", "defaultStatus": "unaffected", "modules": ["Symfony\\Component\\Config\\Util\\XmlUtils::parse"], "packageName": "symfony/config", "product": "symfony", "repo": "https://github.com/symfony/config", "vendor": "sensiolabs", "versions": [{"lessThan": "5.4.56", "status": "affected", "version": "0", "versionType": "git"}, {"lessThan": "6.4.50", "status": "affected", "version": "6.0.0", "versionType": "git"}, {"lessThan": "7.4.23", "status": "affected", "version": "7.0.0", "versionType": "git"}, {"lessThan": "8.1.11", "status": "affected", "version": "8.0.0", "versionType": "git"}]}], "source": "596c5446-0ce5-4ba2-aa66-48b3b757a647"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Symfony Config component\u00a0XmlUtils::parse()\u00a0enables DTD validation before rejecting documents that carry a doctype, allowing\u00a0XML external entity (XXE) injection in Symfony versions prior to 5.4.56, 6.x prior to 6.4.50, 7.x prior to 7.4.23, and 8.x prior to 8.1.11. A remote attacker who can supply XML to this method can determine whether local files exist, cause a denial of service, and, in some configurations, exfiltrate local file content via a crafted XML document whose doctype declares an external\u00a0file://\u00a0entity.\nXmlUtils::parse()\u00a0sets\u00a0$dom->validateOnParse = true\u00a0before calling\u00a0loadXML()\u00a0and only rejects documents carrying a doctype afterwards. Enabling DTD validation makes libxml resolve external entities during\u00a0loadXML(), and\u00a0LIBXML_NONET\u00a0blocks\u00a0http://\u00a0but not\u00a0file://, so a\u00a0file://\u00a0entity is read from disk before the doctype rejection runs. The content of the file is not returned to the caller, but the distinct libxml error for a missing path reveals whether a file exists, and an entity pointing at a large or slow file causes a denial of service. If the application registers a network-capable stream wrapper such as\u00a0s3://, a parameter entity can also send the content of a local file to an external server.\u00a0This is the same issue as CVE-2026-45071, which was fixed in the\u00a0DomCrawler\u00a0component but not in\u00a0Config.\n\nApplications are affected if they pass untrusted XML to\u00a0XmlUtils::parse()\u00a0directly. The Symfony components that call it process developer-provided or operator-configured sources, such as configuration files and the XLIFF documents fetched by the translation providers."}], "id": "CVE-2026-123824", "lastModified": "2026-11-06T18:18:05.140", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.3, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "596c5446-0ce5-4ba2-aa66-48b3b757a647", "type": "Secondary"}]}, "published": "2026-11-06T18:18:05.140", "references": [{"source": "596c5446-0ce5-4ba2-aa66-48b3b757a647", "url": "https://github.com/symfony/symfony/commit/334ef21a6039355c05b123e7df60699be0e28da3"}, {"source": "596c5446-0ce5-4ba2-aa66-48b3b757a647", "url": "https://github.com/symfony/symfony/security/advisories/GHSA-5jff-8h8q-r5qx"}], "sourceIdentifier": "596c5446-0ce5-4ba2-aa66-48b3b757a647", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-611"}], "source": "596c5446-0ce5-4ba2-aa66-48b3b757a647", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,5.4.56)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.0.0,6.4.50)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.0.0,7.4.23)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.0.0,8.1.11)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "symfony", "source": "cna", "vendor": "sensiolabs"}, "product": "symfony", "vendor": "sensiolabs"}], "created": "2026-11-06T18:45:07.438457+00:00", "updated": "2026-11-06T19:00:12.635639+00:00", "vendors": ["sensiolabs", "sensiolabs$PRODUCT$symfony"]}