{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-26067", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-02-10T18:01:31.900Z", "datePublished": "2026-04-21T16:16:03.293Z", "dateUpdated": "2026-04-21T17:35:19.882Z"}, "containers": {"cna": {"title": "October: Safe Mode Bypass via CSS Preprocessor Compilers", "problemTypes": [{"descriptions": [{"cweId": "CWE-863", "lang": "en", "description": "CWE-863: Incorrect Authorization", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-184", "lang": "en", "description": "CWE-184: Incomplete List of Disallowed Inputs", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/octobercms/october/security/advisories/GHSA-3888-q23f-x7qh", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/octobercms/october/security/advisories/GHSA-3888-q23f-x7qh"}], "affected": [{"vendor": "octobercms", "product": "october", "versions": [{"version": ">= 4.0.0, < 4.1.10", "status": "affected"}, {"version": "< 3.7.14", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-21T16:16:03.293Z"}, "descriptions": [{"lang": "en", "value": "October is a Content Management System (CMS) and web platform. Prior to 3.7.14 and 4.1.10, a server-side information disclosure vulnerability was identified in the handling of CSS preprocessor files. Backend users with Editor permissions could craft .less, .sass, or .scss files that leverage the compiler's import functionality to read arbitrary files from the server. This worked even with cms.safe_mode enabled. This vulnerability is fixed in 3.7.14 and 4.1.10."}], "source": {"advisory": "GHSA-3888-q23f-x7qh", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-21T17:35:10.591022Z", "id": "CVE-2026-26067", "options": [{"Exploitation": "none"}, {"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": "2026-04-21T17:35:19.882Z"}}]}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "October is a Content Management System (CMS) and web platform. Prior to 3.7.14 and 4.1.10, a server-side information disclosure vulnerability was identified in the handling of CSS preprocessor files. Backend users with Editor permissions could craft .less, .sass, or .scss files that leverage the compiler's import functionality to read arbitrary files from the server. This worked even with cms.safe_mode enabled. This vulnerability is fixed in 3.7.14 and 4.1.10."}], "id": "CVE-2026-26067", "lastModified": "2026-04-21T17:16:24.383", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-21T17:16:24.383", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/octobercms/october/security/advisories/GHSA-3888-q23f-x7qh"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-184"}, {"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.0.0,4.1.10)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.7.14)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "october", "source": "cna", "vendor": "octobercms"}, "product": "october", "vendor": "octobercms"}], "created": "2026-04-21T17:30:37.394671+00:00", "updated": "2026-04-21T17:30:37.394756+00:00", "vendors": ["octobercms", "octobercms$PRODUCT$october"]}