{"schema":"threatline.record/2","record":{"id":"CVE-2026-115479","aliases":["GHSA-w47c-4g8m-gjv9"],"summary":"baserCMS: Mail-form auto-replies accept multiple visitor-controlled recipients","details":"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.","categories":["Unclassified"],"product":"basercms","vendor":"baserproject","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-115479","source_modified_at":"2026-10-23T13:36:01.655Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"basercms","vendor":"baserproject","versions":[{"status":"affected","version":">= 5.2.5, < 5.3.2"},{"status":"affected","version":">= 5.4.0, < 5.4.2"}],"defaultStatus":null},{"source":"GitHub Advisory Database","source_url":"https://github.com/baserproject/basercms/security/advisories/GHSA-w47c-4g8m-gjv9","source_modified_at":"2026-10-23T13:28:28Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"ecosystem":"other","name":"baserCMS"},"range":">= 5.2.5, <= 5.4.1"}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/baserproject/basercms/security/advisories/GHSA-w47c-4g8m-gjv9","source_modified_at":"2026-10-23T13:28:28Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"ecosystem":"other","name":"baserCMS"},"version":"5.3.2"},{"source":"GitHub Advisory Database","source_url":"https://github.com/baserproject/basercms/security/advisories/GHSA-w47c-4g8m-gjv9","source_modified_at":"2026-10-23T13:28:28Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"ecosystem":"other","name":"baserCMS"},"version":"5.4.2"}],"cvss":5.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00412,"percentile":0.34374,"score_date":"2026-10-24"},"published_at":"2026-10-23T13:36:01.655Z","modified_at":"2026-10-23T13:36:01.655Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-115479","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T13:36:01.655Z"},{"source":"GitHub Advisory Database","url":"https://github.com/baserproject/basercms/security/advisories/GHSA-w47c-4g8m-gjv9","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-23T13:28:28Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-115479","fetched_at":"2026-10-24T18:03:20.872036Z","source_modified_at":"2026-10-24"}],"sources":["CVE List","GitHub Advisory Database","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/baserproject/basercms/security/advisories/GHSA-w47c-4g8m-gjv9","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/baserproject/basercms/commit/99e6257c9d5e2fa2bff2351defcb9fb37f69daf1","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/baserproject/basercms/releases/tag/5.3.2","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/baserproject/basercms/releases/tag/5.4.2","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-23T13:36:01.655Z","content_hash":"9383751b62d48c00cc85a930cfd5042de35a16aac3a4ac77057d05f51e715020"}}