{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42207", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-25T05:04:37.027Z", "datePublished": "2026-05-15T17:06:40.973Z", "dateUpdated": "2026-05-15T17:50:25.297Z"}, "containers": {"cna": {"title": "Magento LTS: Open Redirect via Unvalidated `uenc` Parameter in `stockAction()` - magento-lts", "problemTypes": [{"descriptions": [{"cweId": "CWE-601", "lang": "en", "description": "CWE-601: URL Redirection to Untrusted Site ('Open Redirect')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/OpenMage/magento-lts/security/advisories/GHSA-qpgq-5g92-j5q8", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/OpenMage/magento-lts/security/advisories/GHSA-qpgq-5g92-j5q8"}], "affected": [{"vendor": "OpenMage", "product": "magento-lts", "versions": [{"version": "< 20.18.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-15T17:06:40.973Z"}, "descriptions": [{"lang": "en", "value": "Magento Long Term Support (LTS) is an unofficial, community-driven project provides an alternative to the Magento Community Edition e-commerce platform with a high level of backward compatibility. Prior to 20.18.0, Mage_ProductAlert_AddController::stockAction() reads the uenc query parameter and passes it directly to $this->_redirectUrl($backUrl) without calling $this->_isUrlInternal(). When the supplied product_id does not match any catalog product, the server issues an unvalidated HTTP 302 redirect to whatever URL was provided as uenc. This vulnerability is fixed in 20.18.0."}], "source": {"advisory": "GHSA-qpgq-5g92-j5q8", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/OpenMage/magento-lts/security/advisories/GHSA-qpgq-5g92-j5q8", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-15T17:50:03.433120Z", "id": "CVE-2026-42207", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-15T17:50:25.297Z"}}]}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Magento Long Term Support (LTS) is an unofficial, community-driven project provides an alternative to the Magento Community Edition e-commerce platform with a high level of backward compatibility. Prior to 20.18.0, Mage_ProductAlert_AddController::stockAction() reads the uenc query parameter and passes it directly to $this->_redirectUrl($backUrl) without calling $this->_isUrlInternal(). When the supplied product_id does not match any catalog product, the server issues an unvalidated HTTP 302 redirect to whatever URL was provided as uenc. This vulnerability is fixed in 20.18.0."}], "id": "CVE-2026-42207", "lastModified": "2026-05-18T19:35:04.993", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-15T17:16:46.757", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/OpenMage/magento-lts/security/advisories/GHSA-qpgq-5g92-j5q8"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/OpenMage/magento-lts/security/advisories/GHSA-qpgq-5g92-j5q8"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-601"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,20.18.0)"}}], "enrichment": {"confidence": 89.0, "confidence_source": "matching", "scores": [{"score": 89.0, "source": "matching"}]}, "original": {"product": "magento-lts", "source": "cna", "vendor": "OpenMage"}, "product": "magento", "vendor": "openmage"}], "created": "2026-05-15T18:30:05.531468+00:00", "updated": "2026-05-17T17:01:17.500802+00:00", "vendors": ["openmage", "openmage$PRODUCT$magento"]}