CVE-2026-88773

HTTP Request Smuggling

State: Published
Severity: 9.3 Critical
Published: Sep 27, 2026
Updated: Sep 29, 2026
Reserved: Sep 10, 2026

Description

Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.

This 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.

Scores

CVSS	Score	Vector	Source
4.0	9.3 Critical	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	NetScaler

Weaknesses

CWE-444 Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')

Affected Products

Product	Versions
ADCCitrix NetScaler	before 14.1-73.37Affected before 13.1-64.23Affected before 14.1-73.37 FIPSAffected before 13.1-37.279 and NDcPPAffected
GatewayCitrix NetScaler	before 14.1-73.37 FIPSAffected before 13.1-64.23Affected

References

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096

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