{"schema":"threatline.record/2","record":{"id":"CVE-2026-24423","aliases":[],"summary":"SmarterTools SmarterMail Missing Authentication for Critical Function Vulnerability","details":"SmarterTools SmarterMail contains a missing authentication for critical function vulnerability in the ConnectToHub API method. This could allow the attacker to point the SmarterMail instance to a malicious HTTP server which serves the malicious OS command and could lead to command execution. ","categories":["Unclassified"],"product":"SmarterMail","vendor":"SmarterTools","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-24423","source_modified_at":"2026-08-04T03:56:04.225Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"SmarterMail","vendor":"SmarterTools","versions":[{"lessThan":"100.0.9511","status":"affected","version":"0","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-24423","source_modified_at":"2026-08-04T03:56:04.225Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"SmarterMail","ecosystem":null},"version":"100.0.9511","basis":"first unaffected version stated in the CVE record"}],"cvss":9.3,"severity":"Critical","kev":{"listed":true,"date_added":"2026-02-05","due_date":"2026-02-26","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","ransomware_campaign_use":"Known"},"epss":{"probability":0.88177,"percentile":0.9977,"score_date":"2026-10-23"},"published_at":"2026-01-23T16:53:34.951Z","modified_at":"2026-08-04T03:56:04.225Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-24423","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-08-04T03:56:04.225Z"},{"source":"Nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-24423.yaml","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":null},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-24423","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Nuclei","EPSS"],"references":[{"source":"CVE List","url":"https://www.smartertools.com/smartermail/release-notes/current","tags":["release-notes","patch"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-24423","source":"CISA KEV"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-24423","source":"CISA KEV"},{"source":"CVE List","url":"https://code-white.com/public-vulnerability-list/#systemadminsettingscontrollerconnecttohub-missing-authentication-in-smartermail","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/smartertools-smartermail-unauthenticated-rce-via-connecttohub-api","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24423","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"total","assessed_at":"2026-02-05T00:00:00+00:00"},"exploits":[{"source":"Nuclei","kind":"Scanner template","name":"SmarterMail - Remote Code Execution","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-24423.yaml"}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-08-04T03:56:04.225Z","content_hash":"a854ad81eef4e4ac4c3cd9b86488c7e81ad7e083d02f133aa3e72bbb11c0c68a"}}