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{"affected": [{"affectedData": [{"collectionURL": "https://packagist.org", "defaultStatus": "unaffected", "packageName": "sylius/sylius", "packageURL": "pkg:composer/sylius/sylius", "product": "Sylius", "vendor": "Sylius", "versions": [{"lessThan": "1.12.25", "status": "affected", "version": "1.12.0", "versionType": "semver"}, {"lessThan": "1.13.17", "status": "affected", "version": "1.13.0", "versionType": "semver"}, {"lessThan": "1.14.20", "status": "affected", "version": "1.14.0", "versionType": "semver"}, {"lessThan": "2.1.16", "status": "affected", "version": "2.0.0", "versionType": "semver"}, {"lessThan": "2.2.9", "status": "affected", "version": "2.2.0", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Sylius versions before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 build administrator password-reset links using the request Host header without validation, allowing unauthenticated attackers to redirect reset tokens to attacker-controlled domains. Attackers can request password resets for known administrator email addresses with forged Host headers to intercept valid reset tokens and take over administrator accounts."}], "id": "CVE-2026-100870", "lastModified": "2026-09-27T13:16:38.240", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "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": 8.7, "baseSeverity": "HIGH", "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": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/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": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}]}, "published": "2026-09-27T13:16:38.240", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/Sylius/Sylius"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/Sylius/Sylius/commit/1255d75b20d3d88a5e5c8d46791504134c838480"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/Sylius/Sylius/pull/19215"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/Sylius/Sylius/releases/tag/v2.2.9"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/Sylius/Sylius/security/advisories/GHSA-77w3-2367-7xvq"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/sylius-before-1.12.25-1.13.17-1.14.20-2.1.16-and-2.2.9-admin-password-reset-poisoning-via-host-header"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-640"}], "source": "disclosure@vulncheck.com", "type": "Primary"}]}

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