{"schema":"threatline.record/2","record":{"id":"CVE-2026-115480","aliases":["GHSA-cpxq-6gjp-m59g"],"summary":"baserCMS: Public Web API mail-form submission bypasses image CAPTCHA","details":"baserCMS is a website development framework. In versions 5.0.0 before 5.3.2 and 5.4.0 before 5.4.2, the public POST /baser/api/bc-mail/mail_messages/add/{mailContentId}.json endpoint accepts submissions without enforcing the form's auth_captcha setting. BcMail\\Controller\\Api\\MailMessagesController::add() and MailMessagesService::create() omit the BcCaptchaService::check() verification of captcha_id and auth_captcha performed by MailController::submit() in the web UI. An unauthenticated attacker who can reach the API can therefore automate submissions without solving the enabled image challenge. The API disables FormProtection and has no rate limit; submissions can generate administrator-inbox spam, send attacker-influenced auto-replies to third parties when an email field is present, and accumulate mail_messages database records when save_info is enabled. The API already enforces the isAccepting() check added for CVE-2026-30878; the missing CAPTCHA check is a separate control failure. 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-2026-115480","source_modified_at":"2026-10-23T13:37:32.184Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"basercms","vendor":"baserproject","versions":[{"status":"affected","version":">= 5.0.0, < 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-cpxq-6gjp-m59g","source_modified_at":"2026-10-23T13:28:36Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"ecosystem":"other","name":"baserCMS"},"range":">= 5.0.0, <= 5.4.1"}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/baserproject/basercms/security/advisories/GHSA-cpxq-6gjp-m59g","source_modified_at":"2026-10-23T13:28:36Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"ecosystem":"other","name":"baserCMS"},"version":"5.3.2"},{"source":"GitHub Advisory Database","source_url":"https://github.com/baserproject/basercms/security/advisories/GHSA-cpxq-6gjp-m59g","source_modified_at":"2026-10-23T13:28:36Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"ecosystem":"other","name":"baserCMS"},"version":"5.4.2"}],"cvss":5.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.0043,"percentile":0.36235,"score_date":"2026-10-24"},"published_at":"2026-10-23T13:37:32.184Z","modified_at":"2026-10-23T13:37:32.184Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-115480","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T13:37:32.184Z"},{"source":"GitHub Advisory Database","url":"https://github.com/baserproject/basercms/security/advisories/GHSA-cpxq-6gjp-m59g","fetched_at":"2026-10-24T00:31:04.721601Z","source_modified_at":"2026-10-23T13:28:36Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-115480","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-cpxq-6gjp-m59g","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/baserproject/basercms/commit/3444154ca40f308ade8991e54459248f866dcf61","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":"2026-10-23T13:37:32.184Z","content_hash":"1677f6b77b09b4c521959721a970fbf4dbec28fbdd5b7a64e400b1b58303ef9f"}}