{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43880","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-04T15:17:09.329Z","datePublished":"2026-05-11T20:37:15.967Z","dateUpdated":"2026-05-12T12:55:33.005Z"},"containers":{"cna":{"title":"WWBN AVideo: Unauthenticated Arbitrary Email Sending via sendEmail.json.php Allows Phishing from Site's Legitimate From Address","problemTypes":[{"descriptions":[{"cweId":"CWE-940","lang":"en","description":"CWE-940: Improper Verification of Source of a Communication Channel","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/WWBN/AVideo/security/advisories/GHSA-5hgj-7gm9-cff5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/WWBN/AVideo/security/advisories/GHSA-5hgj-7gm9-cff5"},{"name":"https://github.com/WWBN/AVideo/commit/4e3709895857a5857f0edb46b0ee984de0d9e1a2","tags":["x_refsource_MISC"],"url":"https://github.com/WWBN/AVideo/commit/4e3709895857a5857f0edb46b0ee984de0d9e1a2"}],"affected":[{"vendor":"WWBN","product":"AVideo","versions":[{"version":"<= 29.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-11T20:37:15.967Z"},"descriptions":[{"lang":"en","value":"WWBN AVideo is an open source video platform. In versions up to and including 29.0, objects/sendEmail.json.php exposes two branches depending on whether contactForm=1 is submitted. When the parameter is omitted, the endpoint sets $sendTo to an attacker-supplied email and, for unauthenticated callers, uses the site's own contact email as the message From:/Reply-To:. The endpoint is explicitly allow-listed as a \"public write action\" in objects/functionsSecurity.php (line 885), so it requires no authentication or CSRF token. An unauthenticated attacker (solving a captcha) can force the site's own SMTP infrastructure to send attacker-composed emails to arbitrary recipients with the site's legitimate sender address, passing SPF/DKIM/DMARC for the site's domain — ideal for targeted phishing and brand impersonation. Commit 4e3709895857a5857f0edb46b0ee984de0d9e1a2 contains an updated fix."}],"source":{"advisory":"GHSA-5hgj-7gm9-cff5","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/WWBN/AVideo/security/advisories/GHSA-5hgj-7gm9-cff5","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-12T12:55:28.626058Z","id":"CVE-2026-43880","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"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":"2026-05-12T12:55:33.005Z"}}]}}