{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-27127", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-02-17T18:42:27.043Z", "datePublished": "2026-02-24T02:39:44.569Z", "dateUpdated": "2026-02-24T02:39:44.569Z"}, "containers": {"cna": {"title": "Craft CMS has Cloud Metadata SSRF Protection Bypass via DNS Rebinding", "problemTypes": [{"descriptions": [{"cweId": "CWE-367", "lang": "en", "description": "CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/craftcms/cms/security/advisories/GHSA-gp2f-7wcm-5fhx", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/craftcms/cms/security/advisories/GHSA-gp2f-7wcm-5fhx"}, {"name": "https://github.com/craftcms/cms/security/advisories/GHSA-x27p-wfqw-hfcc", "tags": ["x_refsource_MISC"], "url": "https://github.com/craftcms/cms/security/advisories/GHSA-x27p-wfqw-hfcc"}, {"name": "https://github.com/craftcms/cms/commit/a4cf3fb63bba3249cf1e2882b18a2d29e77a8575", "tags": ["x_refsource_MISC"], "url": "https://github.com/craftcms/cms/commit/a4cf3fb63bba3249cf1e2882b18a2d29e77a8575"}], "affected": [{"vendor": "craftcms", "product": "cms", "versions": [{"version": ">= 4.5.0-RC1, < 4.16.19", "status": "affected"}, {"version": ">= 5.0.0-RC1, < 5.8.23", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-02-24T02:39:44.569Z"}, "descriptions": [{"lang": "en", "value": "Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, the SSRF validation in Craft CMS\u2019s GraphQL Asset mutation performs DNS resolution separately from the HTTP request. This Time-of-Check-Time-of-Use (TOCTOU) vulnerability enables DNS rebinding attacks, where an attacker\u2019s DNS server returns different IP addresses for validation compared to the actual request. This is a bypass of the security fix for CVE-2025-68437 that allows access to all blocked IPs, not just IPv6 endpoints. Exploitation requires GraphQL schema permissions for editing assets in the `<VolumeName>` volume and creating assets in the `<VolumeName>` volume. These permissions may be granted to authenticated users with appropriate GraphQL schema access and/or Public Schema (if misconfigured with write permissions). Versions 4.16.19 and 5.8.23 patch the issue."}], "source": {"advisory": "GHSA-gp2f-7wcm-5fhx", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, the SSRF validation in Craft CMS\u2019s GraphQL Asset mutation performs DNS resolution separately from the HTTP request. This Time-of-Check-Time-of-Use (TOCTOU) vulnerability enables DNS rebinding attacks, where an attacker\u2019s DNS server returns different IP addresses for validation compared to the actual request. This is a bypass of the security fix for CVE-2025-68437 that allows access to all blocked IPs, not just IPv6 endpoints. Exploitation requires GraphQL schema permissions for editing assets in the `<VolumeName>` volume and creating assets in the `<VolumeName>` volume. These permissions may be granted to authenticated users with appropriate GraphQL schema access and/or Public Schema (if misconfigured with write permissions). Versions 4.16.19 and 5.8.23 patch the issue."}], "id": "CVE-2026-27127", "lastModified": "2026-02-24T14:13:49.320", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.0, "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/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": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-02-24T03:16:02.440", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/craftcms/cms/commit/a4cf3fb63bba3249cf1e2882b18a2d29e77a8575"}, {"source": "security-advisories@github.com", "url": "https://github.com/craftcms/cms/security/advisories/GHSA-gp2f-7wcm-5fhx"}, {"source": "security-advisories@github.com", "url": "https://github.com/craftcms/cms/security/advisories/GHSA-x27p-wfqw-hfcc"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.5.0-RC1,4.16.19)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.0.0-RC1,5.8.23)"}}], "enrichment": {"confidence": 83.0, "confidence_source": "matching", "scores": [{"score": 83.0, "source": "matching"}]}, "original": {"product": "cms", "source": "cna", "vendor": "craftcms"}, "product": "craftcms", "vendor": "craftcms"}], "created": "2026-02-24T09:53:11.920916+00:00", "updated": "2026-02-24T09:53:11.920996+00:00", "vendors": ["craftcms", "craftcms$PRODUCT$craftcms"]}