{"id":"CVE-2026-88773","aliases":["EUVD-2026-87961","GHSA-9x87-2c36-ffjf"],"status":"published","title":"HTTP Request Smuggling","description":"Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\n\nThis issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1-37.279 and NDcPP; Gateway: before 14.1-73.37 FIPS and before 13.1-64.23.","severity":{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.03081,"percentile":0.87848,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-444"],"published":"2026-09-27T16:20:08Z","modified":"2026-09-29T16:17:13Z","exploits":[{"source":"metasploit","id":"exploit/freebsd/http/citrix_netscaler_cve_2026_88771","title":"Citrix NetScaler Unauthenticated Login Log Command Injection (CVE-2026-88771)","type":"exploit","platform":"Unix","date":"2026-09-27","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/freebsd/http/citrix_netscaler_cve_2026_88771"},{"source":"pocgithub","id":"CompleteTech-Security/netscaler-cve-2026-88773-check","title":"CompleteTech-Security/netscaler-cve-2026-88773-check","date":"2026-10-23","url":"https://github.com/CompleteTech-Security/netscaler-cve-2026-88773-check"},{"source":"pocgithub","id":"Fyyre/CVE-2026-88773","title":"Fyyre/CVE-2026-88773","date":"2026-11-01","url":"https://github.com/Fyyre/CVE-2026-88773"},{"source":"pocgithub","id":"Scyrix-LLC/CVE-2026-88773","title":"Scyrix-LLC/CVE-2026-88773","date":"2026-10-02","url":"https://github.com/Scyrix-LLC/CVE-2026-88773"}],"products":[{"vendor":"citrix","product":"netscaler_application_delivery_controller"},{"vendor":"citrix","product":"netscaler_gateway"},{"vendor":"citrix netscaler","product":"adc"},{"vendor":"citrix netscaler","product":"gateway"},{"vendor":"netscaler","product":"adc"},{"vendor":"netscaler","product":"gateway"}],"references":[{"url":"https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88773"},{"url":"https://github.com/advisories/GHSA-9x87-2c36-ffjf"}],"sources":{"cve":[{"id":"CVE-2026-88773","title":"HTTP Request Smuggling","description":"Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\n\nThis issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1-37.279 and NDcPP; Gateway: before 14.1-73.37 FIPS and before 13.1-64.23.","status":"published","published":"2026-09-27T16:20:08.382Z","modified":"2026-09-29T15:21:44.819Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N","level":"critical","assessor":"cna"}],"cwes":["CWE-444"],"updated_at":"2026-11-02T13:41:53.237769Z"}],"euvd":[{"id":"EUVD-2026-87961","description":"Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\n\nThis issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1-37.279 and NDcPP; Gateway: before 14.1-73.37 FIPS and before 13.1-64.23.","status":"published","published":"2026-09-27T16:20:08Z","modified":"2026-09-29T15:21:44Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N","level":"critical"}],"updated_at":"2026-11-02T17:27:51.995341Z"}],"ghsa":[{"id":"GHSA-9x87-2c36-ffjf","title":"Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in...","description":"Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\n\nThis issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1-37.279 and NDcPP; Gateway: before 14.1-73.37 FIPS and before 13.1-64.23.","status":"published","published":"2026-09-27T18:30:22Z","modified":"2026-09-28T15:31:46Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/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":"critical"},{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-444"],"updated_at":"2026-11-02T15:12:32.013867Z"}],"nvd":[{"id":"CVE-2026-88773","description":"Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\n\nThis issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1-37.279 and NDcPP; Gateway: before 14.1-73.37 FIPS and before 13.1-64.23.","status":"published","published":"2026-09-27T17:16:56.507Z","modified":"2026-09-29T16:17:13.37Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/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":"critical","assessor":"secondary"},{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N","level":"critical","assessor":"primary"}],"cwes":["CWE-444"],"updated_at":"2026-11-02T14:12:52.081323Z"}]}}