CVE-2026-18329

CVE-2026-18329 · NGINX ngx_http_js_module vulnerability

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Description NGINX JavaScript (njs) and QuickJS (qjs) engines have a vulnerability when a js_access handler performs asynchronous request body processing and an exception is thrown during asynchronous access-control evaluation before an explicit access denial is returned. An unauthenticated attacker can exploit this vulnerability by sending a crafted HTTP request that triggers an error condition in the access validation logic. This may cause the js_access phase to fail open, allowing the request to proceed instead of being denied, resulting in an authentication or authorization bypass and unauthorized access to protected resources. Impact This vulnerability may allow remote attackers to bypass js_access controls. 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.

CVSS 8.8 · Hoch · EPSS 0,6% · Korrektur verfügbar

Veröffentlicht

2026-09-02T15:40:54.115Z

Aktualisiert

2026-09-02T17:56:59.397Z

Technologie-Stack: system

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