{"id":"CVE-2026-121557","aliases":["EUVD-2026-115902","GHSA-cj7j-h23p-3c8m"],"status":"published","title":"WPPConnect Server through 2.10.74 Missing Authentication via /api/:session/chatwoot","description":"WPPConnect Server through 2.10.74 contains a missing authentication vulnerability that allows unauthenticated attackers to send WhatsApp messages by calling the Chatwoot webhook route without verifyToken middleware. Attackers who know or guess a connected session name can POST outgoing message bodies to send arbitrary texts or files from that account to any number.","severity":{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00411,"percentile":0.35897,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2026-11-03T15:17:14Z","modified":"2026-11-04T02:48:11Z","products":[{"vendor":"wppconnect","product":"wppconnect-server"}],"references":[{"url":"https://github.com/wppconnect-team/wppconnect-server/issues/2701","tags":["issue-tracking","report"]},{"url":"https://github.com/wppconnect-team/wppconnect-server","tags":["product","package"]},{"url":"https://github.com/wppconnect-team/wppconnect-server/pull/2702","tags":["patch","issue-tracking","fix"]},{"url":"https://github.com/wppconnect-team/wppconnect-server/blob/v2.10.74/src/routes/index.ts#L963","tags":["technical-description","article"]},{"url":"https://github.com/wppconnect-team/wppconnect-server/blob/v2.10.74/src/controller/deviceController.ts#L2230-L2324","tags":["technical-description","article"]},{"url":"https://www.vulncheck.com/advisories/wppconnect-server-through-2.10.74-missing-authentication-via-api-session-chatwoot","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121557","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-cj7j-h23p-3c8m"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121557.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-121557","title":"WPPConnect Server through 2.10.74 Missing Authentication via /api/:session/chatwoot","description":"WPPConnect Server through 2.10.74 contains a missing authentication vulnerability that allows unauthenticated attackers to send WhatsApp messages by calling the Chatwoot webhook route without verifyToken middleware. Attackers who know or guess a connected session name can POST outgoing message bodies to send arbitrary texts or files from that account to any number.","status":"published","published":"2026-11-03T15:17:14.257Z","modified":"2026-11-07T03:11:19.131Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-306"],"updated_at":"2026-11-07T04:32:31.343254Z"}],"euvd":[{"id":"EUVD-2026-115902","description":"WPPConnect Server through 2.10.74 contains a missing authentication vulnerability that allows unauthenticated attackers to send WhatsApp messages by calling the Chatwoot webhook route without verifyToken middleware. Attackers who know or guess a connected session name can POST outgoing message bodies to send arbitrary texts or files from that account to any number.","status":"published","published":"2026-11-03T15:17:14Z","modified":"2026-11-07T03:11:19Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N","level":"high"}],"updated_at":"2026-11-07T04:08:16.282099Z"}],"ghsa":[{"id":"GHSA-cj7j-h23p-3c8m","title":"WPPConnect Server through 2.10.74 contains a missing authentication vulnerability that allows...","description":"WPPConnect Server through 2.10.74 contains a missing authentication vulnerability that allows unauthenticated attackers to send WhatsApp messages by calling the Chatwoot webhook route without verifyToken middleware. Attackers who know or guess a connected session name can POST outgoing message bodies to send arbitrary texts or files from that account to any number.","status":"published","published":"2026-11-03T18:31:05Z","modified":"2026-11-03T18:31:06Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-306"],"updated_at":"2026-11-03T19:01:31.965978Z"}],"nvd":[{"id":"CVE-2026-121557","description":"WPPConnect Server through 2.10.74 contains a missing authentication vulnerability that allows unauthenticated attackers to send WhatsApp messages by calling the Chatwoot webhook route without verifyToken middleware. Attackers who know or guess a connected session name can POST outgoing message bodies to send arbitrary texts or files from that account to any number.","status":"published","published":"2026-11-03T16:17:28.163Z","modified":"2026-11-07T04:17:22.393Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-306"],"updated_at":"2026-11-07T07:04:25.467195Z"}],"osv":[{"id":"CVE-2026-121557","title":"WPPConnect Server through 2.10.74 Missing Authentication via /api/:session/chatwoot","description":"WPPConnect Server through 2.10.74 contains a missing authentication vulnerability that allows unauthenticated attackers to send WhatsApp messages by calling the Chatwoot webhook route without verifyToken middleware. Attackers who know or guess a connected session name can POST outgoing message bodies to send arbitrary texts or files from that account to any number.","status":"published","published":"2026-11-03T15:17:14.257Z","modified":"2026-11-08T02:30:24.554501352Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N","level":"high"}],"cwes":["CWE-306"],"updated_at":"2026-11-08T02:59:07.863962Z"}]}}