Citrix Gateway 11.1, 12.0, and 12.1 has an Inconsistent Interpretation of HTTP Requests.

published 2020-03-06 6y ago modified 2026-06-17 4mo ago also EUVD-2020-2574

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.0%; EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits: 0; none known

Citrix Gateway 11.1, 12.0, and 12.1 has an Inconsistent Interpretation of HTTP Requests. NOTE: Citrix disputes the reported behavior as not a security issue. Citrix ADC only caches HTTP/1.1 traffic for performance optimization

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Exploit prediction

2.00% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

seclists.org http://seclists.org/fulldisclosure/2020/Mar/11 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness

CWE-444 Inconsistent Interpretation of HTTP Requests

References

seclists.org /fulldisclosure/2020/Mar/11
exploit, mailing-list, third-party-advisory
support.citrix.com /search
vendor-advisory
packetstormsecurity.com /files/156661/Citrix-Gateway-11.1-12.0-12.1-Cache-Bypass.html

Sources

CVE List CVE-2020-10111
NVD CVE-2020-10111

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