7.5
HIGH CVSS 3.1
CVE-2020-11724
OpenResty HTTP Request Smuggling Vulnerability
Description

An issue was discovered in OpenResty before 1.15.8.4. ngx_http_lua_subrequest.c allows HTTP request smuggling, as demonstrated by the ngx.location.capture API.

INFO

Published Date :

April 12, 2020, 9:15 p.m.

Last Modified :

Nov. 21, 2024, 4:58 a.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2020-11724 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Debian debian_linux
1 Openresty openresty
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 HIGH [email protected]
Solution
The OpenResty HTTP request smuggling vulnerability is addressed by updating to a patched version.
  • Update OpenResty to a version greater than 1.15.8.4.
  • Upgrade the nginx packages.
Public PoC/Exploit Available at Github

CVE-2020-11724 has a 4 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-11724 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-11724 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

None

Python Shell

Updated: 2 months, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : June 15, 2025, 1:54 p.m. This repo has been linked 2 different CVEs too.

None

Updated: 4 months ago
0 stars 0 fork 0 watcher
Born at : May 4, 2025, 12:48 p.m. This repo has been linked 3 different CVEs too.

Исправление небезопасного Ansible-playbook

Updated: 3 months, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : May 1, 2025, 2:37 p.m. This repo has been linked 3 different CVEs too.

An HTTP client specifically developed for security researchers

http proxy smuggling tls

Shell Rust

Updated: 1 month ago
22 stars 2 fork 2 watcher
Born at : May 13, 2024, 12:12 p.m. This repo has been linked 2 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-11724 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-11724 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/openresty/lua-nginx-module/commit/9ab38e8ee35fc08a57636b1b6190dca70b0076fa
    Added Reference https://github.com/openresty/openresty/blob/4e8b4c395f842a078e429c80dd063b2323999957/patches/ngx_http_lua-0.10.15-fix_location_capture_content_length_chunked.patch
    Added Reference https://lists.debian.org/debian-lts-announce/2020/07/msg00014.html
    Added Reference https://security.netapp.com/advisory/ntap-20210129-0002/
    Added Reference https://www.debian.org/security/2020/dsa-4750
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Jan. 29, 2021

    Action Type Old Value New Value
    Changed Reference Type https://github.com/openresty/lua-nginx-module/commit/9ab38e8ee35fc08a57636b1b6190dca70b0076fa No Types Assigned https://github.com/openresty/lua-nginx-module/commit/9ab38e8ee35fc08a57636b1b6190dca70b0076fa Patch, Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/07/msg00014.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/07/msg00014.html Mailing List, Third Party Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20210129-0002/ No Types Assigned https://security.netapp.com/advisory/ntap-20210129-0002/ Third Party Advisory
    Changed Reference Type https://www.debian.org/security/2020/dsa-4750 No Types Assigned https://www.debian.org/security/2020/dsa-4750 Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jan. 29, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20210129-0002/ [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 27, 2020

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2020/dsa-4750 [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 20, 2020

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2020/07/msg00014.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 13, 2020

    Action Type Old Value New Value
    Added Reference https://github.com/openresty/lua-nginx-module/commit/9ab38e8ee35fc08a57636b1b6190dca70b0076fa [No Types Assigned]
  • Initial Analysis by [email protected]

    Apr. 13, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type https://github.com/openresty/openresty/blob/4e8b4c395f842a078e429c80dd063b2323999957/patches/ngx_http_lua-0.10.15-fix_location_capture_content_length_chunked.patch No Types Assigned https://github.com/openresty/openresty/blob/4e8b4c395f842a078e429c80dd063b2323999957/patches/ngx_http_lua-0.10.15-fix_location_capture_content_length_chunked.patch Patch, Third Party Advisory
    Added CWE NIST CWE-444
    Added CPE Configuration OR *cpe:2.3:a:openresty:openresty:*:*:*:*:*:*:*:* versions up to (excluding) 1.15.8.4
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 5
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.80 }} 0.25%

score

0.73180

percentile