CVE-2026-120222
Dashboard / Vulnerabilities / CVE-2026-120222
Summary: undici vulnerable to Denial of Service via unhandled exception in cache-interceptor response replay
Details: undici is an HTTP client for Node.js. In versions 7.0.0 through 7.30.1 and 8.0.0 through 8.12.3, when the cache interceptor is composed with a downstream handler that throws during response processing (such as the built-in dump interceptor exceeding its maxSize, or the decompress interceptor rejecting more than five Content-Encoding values), a throw raised asynchronously while a cached response is replayed escapes as an uncaught exception or unhandled promise rejection and terminates the Node.js process. A malicious or compromised HTTP server can crash any such client by serving a cacheable response that triggers the throw on replay, including on a 304 revalidation of a stale entry, so the impact is availability only. The issue is fixed in undici 7.30.2 and 8.12.4, and users should upgrade to one of those versions or later. As a workaround, avoid composing the cache interceptor with a response handler that throws during response processing until upgrading.
References: https://cna.openjsf.org/security-advisories.html, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120222.json, https://github.com/nodejs/undici/security/advisories/GHSA-3g9m-rv3r-w5w2, https://nvd.nist.gov/vuln/detail/CVE-2026-120222
Affected packages
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