NGINX ngx_http_js_module vulnerability
CVE-2026-78222 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2026-78222, released September 10, 2026. It is not reported as exploited. Patch Radar priority: High.
A vulnerability exists in NGINX JavaScript where a malformed HTTP response received by ngx.fetch() can crash an NGINX worker when trusted JavaScript reads Response.statusText. Exploitation requires control or influence over the fetched HTTP response. Impact: This vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system. There is no control plane exposure; this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libnginx-mod-js · Debian 14 | 1.0.1-1 | DEBIAN-CVE-2026-78222 | Sep 10, 2026 |
| nginx-mod-njs · amzn 2023 | 1.0.1-1.amzn2023.0.1 | ALAS2023-2026-3095 | Sep 28, 2026 |
| nginx-mod-njs-debuginfo · amzn 2023 | 1.0.1-1.amzn2023.0.1 | ALAS2023-2026-3095 | Sep 28, 2026 |
| nginx-mod-njs-debugsource · amzn 2023 | 1.0.1-1.amzn2023.0.1 | ALAS2023-2026-3095 | Sep 28, 2026 |
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