CVE-2026-126663

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{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:composer/contao/core-bundle", "product": "Contao", "repo": "https://github.com/contao/contao", "vendor": "Contao", "versions": [{"lessThan": "5.3.54", "status": "affected", "version": "4.0.0", "versionType": "semver"}, {"lessThan": "5.7.17", "status": "affected", "version": "5.4.0-RC1", "versionType": "semver"}, {"lessThan": "6.0.6", "status": "affected", "version": "6.0.0-RC1", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Contao 4.0.0 before 5.3.54, 5.4.0 before 5.7.17, and 6.0.0 before 6.0.6 contains a path traversal vulnerability that allows content editors to read image files anywhere on the filesystem via the {{image::}} insert tag. Attackers can embed percent-encoded sequences like ..%2f that pass Validator::isInsecurePath() before rawurldecode(), making the frontend resize and serve readable image files outside the files directory."}], "id": "CVE-2026-126663", "lastModified": "2026-11-11T13:17:24.660", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "disclosure@vulncheck.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.3, "baseSeverity": "MEDIUM", "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:N/PR:L/UI:N/VC:L/VI:N/VA:N/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": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}]}, "published": "2026-11-11T13:17:24.527", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/contao/contao/blob/5.3.53/core-bundle/src/InsertTag/Resolver/LegacyInsertTag.php#L565-L582"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/contao/contao/commit/0f7989eb5b28d85dcd441ef22f80f8af4f56433e"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/contao/contao/commit/688c0f6213afbd000cd22ad0a44555eca80b40ab"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/contao/contao/commit/e820e3c9d79a5c07f274558513c8db08a79bf804"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/contao/contao/releases/tag/5.3.54"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/contao/contao/releases/tag/5.7.17"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/contao/contao/releases/tag/6.0.6"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/contao/contao/security/advisories/GHSA-r7cf-mfp4-r23h"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/contao-4.0.0-before-5.3.54-5.4.0-before-5.7.17-and-6.0.0-before-6.0.6-path-traversal-via-image-insert-tag"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-180"}], "source": "disclosure@vulncheck.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.0.0,5.3.54)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.4.0-RC1,5.7.17)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.0.0-RC1,6.0.6)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Contao", "source": "cna", "vendor": "Contao"}, "product": "contao", "vendor": "contao"}], "created": "2026-11-12T01:30:05.185468+00:00", "updated": "2026-11-13T09:00:09.342667+00:00", "vendors": ["contao", "contao$PRODUCT$contao"]}