5.3

CVE-2020-36309: openresty lua-nginx-module

CVSS: 5.3v3.1MediumModified
AliasesUBUNTU-CVE-2020-36309DEBIAN-CVE-2020-36309
Published 06-04-2021Last modified 03-11-2025
Open JSON

Vulnerability summary

CVE-2020-36309 is a medium (CVSS 5.3) vulnerability in openresty lua-nginx-module. EPSS estimates a 1.42% chance of exploitation in the next 30 days, higher than 72.4% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (NVD)
EPSS score
1.42%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
DLA-4228-1USN-5371-1

Timeline

  1. 06-04-2021
    PublishedVulnerability first disclosed.
  2. 03-11-2025
    Last modifiedVulnerability information updated.

Description

ngx_http_lua_module (aka lua-nginx-module) before 0.10.16 in OpenResty allows unsafe characters in an argument when using the API to mutate a URI, or a request or response header.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.42%

Chance of exploitation in the next 30 days

Percentile

72%

Versus all other CVEs

30-day change

0.00 pp

From 1.42% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.42%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Debian1 product
  • nginx< 1.22.0-3
Openresty1 product
Ubuntu1 product
  • nginxAll versions (No fix recorded) | < 1.10.3-0ubuntu0.16.04.5+esm3 | < 1.14.0-0ubuntu1.10 | < 1.18.0-0ubuntu1.3

3 vendors · 3 products

References

9 links