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CVE-2026-78222 is a NULL pointer dereference vulnerability in the NGINX JavaScript ngx_http_js_module. A malformed HTTP response received through ngx.fetch() can terminate an NGINX worker when trusted JavaScript reads Response.statusText. Exploitation requires attacker control or influence over the fetched HTTP response. The vulnerability affects NGINX JavaScript 0.5.1 through 0.9.9 and 1.0.0 and can cause data-plane denial of service; there is no control-plane exposure.
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No public exploit code observed for this vulnerability.
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12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability referenced by a FreeBSD security-check plugin affecting the angie-module-njs package; the content provides no technical flaw description.
A network-accessible, low-complexity, unauthenticated vulnerability with high impact to availability and no stated confidentiality or integrity impact. The content identifies Debian Linux versions 12.0, 13.0, and 14.0 and libnginx-mod-js as affected.
A vulnerability affecting the njs ngx.fetch functionality, fixed in njs 1.0.1. The provided content does not reliably specify the flaw's impact due to text corruption.
A vulnerability affecting ngx.fetch in njs, fixed in njs 1.0.1. The content does not provide technical impact details.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.