{"id":"CVE-2026-123824","aliases":["DEBIAN-CVE-2026-123824","EUVD-2026-118384","GHSA-5jff-8h8q-r5qx","UBUNTU-CVE-2026-123824"],"status":"published","title":"Symfony: XXE (Local File Read) in Config XmlUtils::parse() via validateOnParse = true","description":"The Symfony Config component XmlUtils::parse() enables DTD validation before rejecting documents that carry a doctype, allowing 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 file:// entity.\nXmlUtils::parse() sets $dom-\u003evalidateOnParse = true before calling loadXML() and only rejects documents carrying a doctype afterwards. Enabling DTD validation makes libxml resolve external entities during loadXML(), and LIBXML_NONET blocks http:// but not file://, so a file:// 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 s3://, a parameter entity can also send the content of a local file to an external server. This is the same issue as CVE-2026-45071, which was fixed in the DomCrawler component but not in Config.\n\nApplications are affected if they pass untrusted XML to XmlUtils::parse() 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.","severity":{"version":"4.0","score":2.3,"vector":"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","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00272,"percentile":0.19844,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-611"],"published":"2026-11-06T17:19:24Z","modified":"2026-11-10T02:50:22Z","fixes":[{"ecosystem":"Debian:13","package":"symfony","fixed_in":["6.4.50+dfsg-0+deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"symfony","fixed_in":["7.4.23+dfsg-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.23+dfsg-1","5.4.23+dfsg-1+deb12u1","5.4.23+dfsg-1+deb12u2","5.4.23+dfsg-1+deb12u3","5.4.23+dfsg-1+deb12u4","5.4.23+dfsg-1+deb12u5","5.4.24+dfsg-1","5.4.25+dfsg-1","5.4.27+dfsg-1","5.4.28+dfsg-1","5.4.29+dfsg-1","5.4.30+dfsg-1","5.4.31+dfsg-1","5.4.31+dfsg-2","5.4.32+dfsg-1","5.4.33+dfsg-1","5.4.34+dfsg-1","5.4.34+dfsg-2","5.4.35+dfsg-1","5.4.35+dfsg-2","5.4.35+dfsg-3","5.4.52+dfsg-0+deb12u1","5.4.53+dfsg-0+deb12u1","6.3.0+dfsg-1","6.3.0~rc1+dfsg-1","6.3.0~rc2+dfsg-1","6.3.1+dfsg-1","6.3.3+dfsg-1","6.3.4+dfsg-1","6.3.5+dfsg-1","6.3.6+dfsg-1","6.3.7+dfsg-1","6.4.0+dfsg-1","6.4.0~beta2+dfsg-1","6.4.0~beta3+dfsg-1","6.4.0~rc1+dfsg-1","6.4.0~rc2+dfsg-1","6.4.1+dfsg-1","6.4.10+dfsg-1","6.4.11+dfsg-1","6.4.12+dfsg-1","6.4.13+dfsg-1","6.4.14+dfsg-1","6.4.15+dfsg-1","6.4.16+dfsg-1","6.4.16+dfsg-2","6.4.17+dfsg-1","6.4.17+dfsg-2","6.4.17+dfsg-3","6.4.17+dfsg-4","6.4.17+dfsg-5","6.4.17+dfsg-6","6.4.18+dfsg-1","6.4.19+dfsg-1","6.4.19+dfsg-2","6.4.2+dfsg-1","6.4.20+dfsg-1","6.4.20+dfsg-2","6.4.21+dfsg-1","6.4.21+dfsg-2","6.4.24+dfsg-1","6.4.25+dfsg-1","6.4.3+dfsg-1","6.4.4+dfsg-1","6.4.4+dfsg-2","6.4.4+dfsg-3","6.4.4+dfsg-4","6.4.5+dfsg-1","6.4.5+dfsg-2","6.4.5+dfsg-3","6.4.5+dfsg-4","6.4.6+dfsg-1","6.4.7+dfsg-1","6.4.9+dfsg-1","7.0.4+dfsg-1","7.0.5+dfsg-1","7.0.6+dfsg-1","7.0.7+dfsg-1","7.1.0~beta1+dfsg-1","7.1.0~rc1+dfsg-1","7.1.2+dfsg-1","7.1.3+dfsg-1","7.1.4+dfsg-1","7.1.5+dfsg-1","7.2.0~beta1+dfsg-1","7.2.0~beta2+dfsg-1","7.2.0~rc1+dfsg-1","7.2.1+dfsg-1","7.2.2+dfsg-1","7.2.3+dfsg-1","7.2.4+dfsg-1","7.2.5+dfsg-1","7.2.6-1","7.3.0+dfsg-1","7.3.0~beta1+dfsg-1","7.3.0~beta2+dfsg-1","7.3.0~rc1+dfsg-1","7.3.1+dfsg-1","7.3.2+dfsg-1","7.3.3+dfsg-1","7.3.4+dfsg-1","7.3.5-1","7.4.0+dfsg-1","7.4.0+dfsg-2","7.4.0~beta1-1","7.4.0~beta1-2","7.4.0~beta2+dfsg-1","7.4.0~beta2+dfsg-2","7.4.0~beta2+dfsg-3","7.4.0~rc1+dfsg-1","7.4.0~rc2+dfsg-1","7.4.0~rc3+dfsg-1","7.4.10+dfsg-1","7.4.12+dfsg-1","7.4.13+dfsg-1","7.4.13+dfsg-2","7.4.14+dfsg-1","7.4.15+dfsg-1","7.4.15+dfsg-2","7.4.16+dfsg-1","7.4.17+dfsg-1","7.4.18+dfsg-1","7.4.19+dfsg-1","7.4.2+dfsg-1","7.4.2+dfsg-2","7.4.20+dfsg-1","7.4.21+dfsg-1","7.4.21+dfsg-2","7.4.22+dfsg-1","7.4.23+dfsg-1","7.4.3+dfsg-1","7.4.4+dfsg-1","7.4.5+dfsg-1","7.4.6+dfsg-1","7.4.6+dfsg-2","7.4.7+dfsg-1","7.4.8+dfsg-1","7.4.9+dfsg-1","8.0.0+dfsg-1","8.0.0~beta2+dfsg-1","8.0.0~beta2+dfsg-2","8.0.0~rc1+dfsg-1","8.0.0~rc2+dfsg-1","8.0.0~rc3+dfsg-1","8.0.10-1","8.0.11+dfsg-1","8.0.12+dfsg-1","8.0.13+dfsg-1","8.0.2+dfsg-1","8.0.3+dfsg-1","8.0.4+dfsg-1","8.0.5+dfsg-1","8.0.6+dfsg-1","8.0.7+dfsg-1","8.0.8+dfsg-1","8.0.9+dfsg-1","8.1.0+dfsg-1","8.1.1+dfsg-1","8.1.10+dfsg-1","8.1.11+dfsg-1","8.1.3+dfsg-1","8.1.4+dfsg-1","8.1.5+dfsg-1","8.1.6+dfsg-1","8.1.7+dfsg-1","8.1.8+dfsg-1","8.1.9+dfsg-1","8.2.0~beta1+dfsg-1"]},{"source":"osv","ecosystem":"Debian:13","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.50+dfsg-0+deb13u1"}]}],"versions":["6.4.21+dfsg-2","6.4.21+dfsg-2+deb13u1","6.4.24+dfsg-1","6.4.25+dfsg-1","6.4.40+dfsg-0+deb13u1","6.4.41+dfsg-0+deb13u1","6.4.49+dfsg-0+deb13u1"]},{"source":"osv","ecosystem":"Debian:14","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.4.23+dfsg-1"}]}],"versions":["6.4.21+dfsg-2","6.4.24+dfsg-1","6.4.25+dfsg-1","7.0.4+dfsg-1","7.0.5+dfsg-1","7.0.6+dfsg-1","7.0.7+dfsg-1","7.1.0~beta1+dfsg-1","7.1.0~rc1+dfsg-1","7.1.2+dfsg-1","7.1.3+dfsg-1","7.1.4+dfsg-1","7.1.5+dfsg-1","7.2.0~beta1+dfsg-1","7.2.0~beta2+dfsg-1","7.2.0~rc1+dfsg-1","7.2.1+dfsg-1","7.2.2+dfsg-1","7.2.3+dfsg-1","7.2.4+dfsg-1","7.2.5+dfsg-1","7.2.6-1","7.3.0+dfsg-1","7.3.0~beta1+dfsg-1","7.3.0~beta2+dfsg-1","7.3.0~rc1+dfsg-1","7.3.1+dfsg-1","7.3.2+dfsg-1","7.3.3+dfsg-1","7.3.4+dfsg-1","7.3.5-1","7.4.0+dfsg-1","7.4.0+dfsg-2","7.4.0~beta1-1","7.4.0~beta1-2","7.4.0~beta2+dfsg-1","7.4.0~beta2+dfsg-2","7.4.0~beta2+dfsg-3","7.4.0~rc1+dfsg-1","7.4.0~rc2+dfsg-1","7.4.0~rc3+dfsg-1","7.4.10+dfsg-1","7.4.12+dfsg-1","7.4.13+dfsg-1","7.4.13+dfsg-2","7.4.14+dfsg-1","7.4.15+dfsg-1","7.4.15+dfsg-2","7.4.16+dfsg-1","7.4.17+dfsg-1","7.4.18+dfsg-1","7.4.19+dfsg-1","7.4.2+dfsg-1","7.4.2+dfsg-2","7.4.20+dfsg-1","7.4.21+dfsg-1","7.4.21+dfsg-2","7.4.22+dfsg-1","7.4.3+dfsg-1","7.4.4+dfsg-1","7.4.5+dfsg-1","7.4.6+dfsg-1","7.4.6+dfsg-2","7.4.7+dfsg-1","7.4.8+dfsg-1","7.4.9+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.1+dfsg-1","2.7.5+dfsg-1","2.7.9+dfsg-1","2.7.9+dfsg-1ubuntu2","2.7.10-0ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.8.7+dfsg-1.3ubuntu1","3.4.3+dfsg-1ubuntu4","3.4.6+dfsg-1","3.4.6+dfsg-1ubuntu0.1","3.4.6+dfsg-1ubuntu0.1+esm1","3.4.6+dfsg-1ubuntu0.1+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.4+dfsg-1ubuntu1","4.3.8+dfsg-1ubuntu1","4.3.8+dfsg-1ubuntu1+esm1","4.3.8+dfsg-1ubuntu1+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.6+dfsg-1ubuntu7","5.4.4+dfsg-1ubuntu8","5.4.4+dfsg-1ubuntu8+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.23+dfsg-1ubuntu1","5.4.35+dfsg-3ubuntu1","6.4.5+dfsg-3ubuntu2","6.4.5+dfsg-3ubuntu3","6.4.5+dfsg-3ubuntu3+esm1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.4.7+dfsg-1ubuntu1","7.4.9+dfsg-1ubuntu1","7.4.13+dfsg-2ubuntu1","7.4.14+dfsg-1ubuntu2","7.4.15+dfsg-2ubuntu2","7.4.16+dfsg-1ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.4.24+dfsg-1","7.4.5+dfsg-1ubuntu1","7.4.6+dfsg-2ubuntu1","7.4.7+dfsg-1ubuntu1"]}],"products":[{"vendor":"sensiolabs","product":"symfony"},{"vendor":"symfony","product":"symfony"}],"references":[{"url":"https://github.com/symfony/symfony/security/advisories/GHSA-5jff-8h8q-r5qx","tags":["third-party-advisory","advisory","report"]},{"url":"https://github.com/symfony/symfony/commit/334ef21a6039355c05b123e7df60699be0e28da3","tags":["patch","fix","report"]},{"url":"https://packagist.org/packages/symfony/config","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123824.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123824","tags":["advisory"]},{"url":"https://github.com/symfony/config","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-123824","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-123824","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-123824","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-123824","title":"Symfony: XXE (Local File Read) in Config XmlUtils::parse() via validateOnParse = true","description":"The Symfony Config component XmlUtils::parse() enables DTD validation before rejecting documents that carry a doctype, allowing 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 file:// entity.\nXmlUtils::parse() sets $dom-\u003evalidateOnParse = true before calling loadXML() and only rejects documents carrying a doctype afterwards. Enabling DTD validation makes libxml resolve external entities during loadXML(), and LIBXML_NONET blocks http:// but not file://, so a file:// 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 s3://, a parameter entity can also send the content of a local file to an external server. This is the same issue as CVE-2026-45071, which was fixed in the DomCrawler component but not in Config.\n\nApplications are affected if they pass untrusted XML to XmlUtils::parse() 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.","status":"published","published":"2026-11-06T17:19:24.75Z","modified":"2026-11-06T20:29:12.981Z","cvss":[{"version":"4.0","score":2.3,"vector":"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","level":"low","assessor":"cna"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"adp"}],"cwes":["CWE-611"],"updated_at":"2026-11-06T21:31:07.264033Z"}],"euvd":[{"id":"EUVD-2026-118384","description":"The Symfony Config component XmlUtils::parse() enables DTD validation before rejecting documents that carry a doctype, allowing 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 file:// entity.\nXmlUtils::parse() sets $dom-\u003evalidateOnParse = true before calling loadXML() and only rejects documents carrying a doctype afterwards. Enabling DTD validation makes libxml resolve external entities during loadXML(), and LIBXML_NONET blocks http:// but not file://, so a file:// 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 s3://, a parameter entity can also send the content of a local file to an external server. This is the same issue as CVE-2026-45071, which was fixed in the DomCrawler component but not in Config.\n\nApplications are affected if they pass untrusted XML to XmlUtils::parse() 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.","status":"published","published":"2026-11-06T17:19:24Z","modified":"2026-11-06T20:29:12Z","cvss":[{"version":"4.0","score":2.3,"vector":"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","level":"low"}],"updated_at":"2026-11-06T21:07:00.111123Z"}],"nvd":[{"id":"CVE-2026-123824","description":"The Symfony Config component XmlUtils::parse() enables DTD validation before rejecting documents that carry a doctype, allowing 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 file:// entity.\nXmlUtils::parse() sets $dom-\u003evalidateOnParse = true before calling loadXML() and only rejects documents carrying a doctype afterwards. Enabling DTD validation makes libxml resolve external entities during loadXML(), and LIBXML_NONET blocks http:// but not file://, so a file:// 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 s3://, a parameter entity can also send the content of a local file to an external server. This is the same issue as CVE-2026-45071, which was fixed in the DomCrawler component but not in Config.\n\nApplications are affected if they pass untrusted XML to XmlUtils::parse() 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.","status":"published","published":"2026-11-06T18:18:05.14Z","modified":"2026-11-06T21:40:43.45Z","cvss":[{"version":"4.0","score":2.3,"vector":"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","level":"low","assessor":"secondary"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-611"],"updated_at":"2026-11-07T00:02:36.552517Z"}],"osv":[{"id":"CVE-2026-123824","title":"Symfony: XXE (Local File Read) in Config XmlUtils::parse() via validateOnParse = true","description":"The Symfony Config component XmlUtils::parse() enables DTD validation before rejecting documents that carry a doctype, allowing 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 file:// entity.\nXmlUtils::parse() sets $dom-\u003evalidateOnParse = true before calling loadXML() and only rejects documents carrying a doctype afterwards. Enabling DTD validation makes libxml resolve external entities during loadXML(), and LIBXML_NONET blocks http:// but not file://, so a file:// 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 s3://, a parameter entity can also send the content of a local file to an external server. This is the same issue as CVE-2026-45071, which was fixed in the DomCrawler component but not in Config.\n\nApplications are affected if they pass untrusted XML to XmlUtils::parse() 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.","status":"published","published":"2026-11-06T17:19:24.75Z","modified":"2026-11-08T02:47:37.127172779Z","cvss":[{"version":"4.0","score":2.3,"vector":"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","level":"low"}],"cwes":["CWE-611"],"updated_at":"2026-11-08T03:29:52.421856Z"},{"id":"DEBIAN-CVE-2026-123824","description":"The Symfony Config component XmlUtils::parse() enables DTD validation before rejecting documents that carry a doctype, allowing 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 file:// entity. XmlUtils::parse() sets $dom-\u003evalidateOnParse = true before calling loadXML() and only rejects documents carrying a doctype afterwards. Enabling DTD validation makes libxml resolve external entities during loadXML(), and LIBXML_NONET blocks http:// but not file://, so a file:// 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 s3://, a parameter entity can also send the content of a local file to an external server. This is the same issue as CVE-2026-45071, which was fixed in the DomCrawler component but not in Config.  Applications are affected if they pass untrusted XML to XmlUtils::parse() 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.","status":"published","published":"2026-11-06T18:18:05.14Z","modified":"2026-11-10T00:00:07.182067819Z","cvss":[{"version":"4.0","score":2.3,"vector":"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","level":"low"}],"updated_at":"2026-11-10T00:12:24.06296Z"},{"id":"UBUNTU-CVE-2026-123824","description":"The Symfony Config component XmlUtils::parse() enables DTD validation before rejecting documents that carry a doctype, allowing 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 file:// entity. XmlUtils::parse() sets $dom-\u003evalidateOnParse = true before calling loadXML() and only rejects documents carrying a doctype afterwards. Enabling DTD validation makes libxml resolve external entities during loadXML(), and LIBXML_NONET blocks http:// but not file://, so a file:// 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 s3://, a parameter entity can also send the content of a local file to an external server. This is the same issue as CVE-2026-45071, which was fixed in the DomCrawler component but not in Config. Applications are affected if they pass untrusted XML to XmlUtils::parse() 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.","status":"published","published":"2026-11-09T00:00:00Z","modified":"2026-11-10T02:50:22.862177148Z","cvss":[{"version":"4.0","score":2.3,"vector":"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","level":"low"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-10T03:18:58.105788Z"}]}}