{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-40080", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-09T00:39:12.205Z", "datePublished": "2026-06-25T22:29:51.784Z", "dateUpdated": "2026-06-26T14:09:20.592Z"}, "containers": {"cna": {"title": "Cacti: Open Redirect via HTTP_REFERER substring check in auth_login_redirect", "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/Cacti/cacti/security/advisories/GHSA-6gr7-53g8-vchq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/Cacti/cacti/security/advisories/GHSA-6gr7-53g8-vchq"}, {"name": "https://github.com/Cacti/cacti/releases/tag/release%2F1.2.31", "tags": ["x_refsource_MISC"], "url": "https://github.com/Cacti/cacti/releases/tag/release%2F1.2.31"}], "affected": [{"vendor": "Cacti", "product": "cacti", "versions": [{"version": "< 1.2.31", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-25T22:29:51.784Z"}, "descriptions": [{"lang": "en", "value": "Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Open Redirect through a substring check rather than a host check at str_contains($referer, CACTI_PATH_URL). When the user's login_opts == '1' (redirect to referer after login), the function used $_SERVER['HTTP_REFERER'] directly. An attacker could craft a referer such as https://evil.com/cacti/. Where CACTI_PATH_URL is /cacti/, the substring matches and the user is redirected to evil.com after login. The pre-existing validate_redirect_url() helper at lib/html_utility.php performed proper validation but was not invoked from auth_login_redirect(). This issue has been fixed in version 1.2.31."}], "source": {"advisory": "GHSA-6gr7-53g8-vchq", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/Cacti/cacti/security/advisories/GHSA-6gr7-53g8-vchq", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-26T14:08:58.081501Z", "id": "CVE-2026-40080", "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": "2026-06-26T14:09:20.592Z"}}]}}

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