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.
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Score 5.3 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 5.3; sources differ by 0.0.
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.
January 9, 2020
November 21, 2024
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | nginx-light (1.4.6-1ubuntu3.9+esm1) @ trusty | 2026-05-27 | ubuntu |
| ubuntu | nginx-light (1.14.0-0ubuntu1.7) @ bionic | 2026-05-27 | ubuntu |
| redhat | ansible-tower-36/ansible-tower:3.6.7-1 | 2021-03-09 | redhat |
| redhat | ansible-tower-37/ansible-tower-rhel7:3.7.5-1 | 2021-03-09 | redhat |
| redhat | nginx:1.16-8030020201124104955.229f0a1c | 2020-12-15 | redhat |
| redhat | rh-nginx116-nginx-1:1.16.1-4.el7.1 | 2020-07-02 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
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.
RHSA-2020:2817 — Moderate
RHSA-2020:5495 — Moderate
RHSA-2021:0778 — Moderate
RHSA-2021:0779 — Moderate
nginx vulnerability
nginx vulnerability
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
nginx http request smugling error_page directive
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msrc · redhat
CWE-444