CVE-2019-20372

NGINX before 1.17.7, with certain error_page configurations, allows HTTP request smuggling, as demonstrated by the ability of an attacker to read unauthorized web pages in environments where NGINX is being fronted by a load balancer.

CVSS v3.1

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v2.0

4.3 MEDIUMAV:N/AC:M/Au:N/C:P/I:N/A:N

EPSS

14.96% chance of exploitation in the next 30 days, 96th percentile

Published

2020-01-09

Updated

2024-08-05

Proof-of-concept exploits (3)

• 0xleft/CVE-2019-203726★ · 2023-09-16
• moften/CVE-2019-203721★ · 2025-05-06
• vuongnv3389-sec/CVE-2019-203720★ · 2022-04-06

References

• CVE Record
• NVD entry

Related

• CVE-2014-6271
• CVE-2015-9251
• CVE-2018-15473
• CVE-2021-21424
• CVE-2021-23017
• CVE-2021-44228