{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-115479", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-22T15:06:52.738Z", "datePublished": "2026-10-23T13:36:01.655Z", "dateUpdated": "2026-10-23T13:36:01.655Z"}, "containers": {"cna": {"title": "baserCMS: Mail-form auto-replies accept multiple visitor-controlled recipients", "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "lang": "en", "description": "CWE-20: Improper Input Validation", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/baserproject/basercms/security/advisories/GHSA-w47c-4g8m-gjv9", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/baserproject/basercms/security/advisories/GHSA-w47c-4g8m-gjv9"}, {"name": "https://github.com/baserproject/basercms/commit/99e6257c9d5e2fa2bff2351defcb9fb37f69daf1", "tags": ["x_refsource_MISC"], "url": "https://github.com/baserproject/basercms/commit/99e6257c9d5e2fa2bff2351defcb9fb37f69daf1"}, {"name": "https://github.com/baserproject/basercms/releases/tag/5.3.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/baserproject/basercms/releases/tag/5.3.2"}, {"name": "https://github.com/baserproject/basercms/releases/tag/5.4.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/baserproject/basercms/releases/tag/5.4.2"}], "affected": [{"vendor": "baserproject", "product": "basercms", "versions": [{"version": ">= 5.2.5, < 5.3.2", "status": "affected"}, {"version": ">= 5.4.0, < 5.4.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-23T13:36:01.655Z"}, "descriptions": [{"lang": "en", "value": "baserCMS is a website development framework. In versions 5.2.5 before 5.3.2 and 5.4.0 before 5.4.2, an unauthenticated visitor can supply a comma-separated address list in a public mail form's email field and cause a single auto-reply to be addressed to multiple third parties. MailMessageMailer::sendFormToUser() passes the visitor-controlled userMail value to parseAndNormalizeMailAddresses(), which splits it with explode(',') and supplies every resulting address to setTo(). Newly created forms with an email-type field are affected when the separate, optional VALID_EMAIL server-side validation is not enabled; browser type=email validation does not prevent crafted requests. The bundled contact form enables VALID_EMAIL and is not affected. The auto-reply uses the site's sender identity and includes partially attacker-controlled content, allowing abuse of the site to deliver unsolicited mail. This issue has been patched in versions 5.3.2 and 5.4.2."}], "source": {"advisory": "GHSA-w47c-4g8m-gjv9", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "basercms", "vendor": "baserproject", "versions": [{"status": "affected", "version": ">= 5.2.5, < 5.3.2"}, {"status": "affected", "version": ">= 5.4.0, < 5.4.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "baserCMS is a website development framework. In versions 5.2.5 before 5.3.2 and 5.4.0 before 5.4.2, an unauthenticated visitor can supply a comma-separated address list in a public mail form's email field and cause a single auto-reply to be addressed to multiple third parties. MailMessageMailer::sendFormToUser() passes the visitor-controlled userMail value to parseAndNormalizeMailAddresses(), which splits it with explode(',') and supplies every resulting address to setTo(). Newly created forms with an email-type field are affected when the separate, optional VALID_EMAIL server-side validation is not enabled; browser type=email validation does not prevent crafted requests. The bundled contact form enables VALID_EMAIL and is not affected. The auto-reply uses the site's sender identity and includes partially attacker-controlled content, allowing abuse of the site to deliver unsolicited mail. This issue has been patched in versions 5.3.2 and 5.4.2."}], "id": "CVE-2026-115479", "lastModified": "2026-10-23T16:28:32.357", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-23T14:17:52.010", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/baserproject/basercms/commit/99e6257c9d5e2fa2bff2351defcb9fb37f69daf1"}, {"source": "security-advisories@github.com", "url": "https://github.com/baserproject/basercms/releases/tag/5.3.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/baserproject/basercms/releases/tag/5.4.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/baserproject/basercms/security/advisories/GHSA-w47c-4g8m-gjv9"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-10-23T16:15:17.588423+00:00", "updated": "2026-10-23T16:15:17.588429+00:00", "vendors": []}