CVE-2026-120222

NameCVE-2026-120222
Descriptionundici 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1153360

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
node-undici (PTS)bookworm5.15.0+dfsg1+~cs20.10.9.3-1+deb12u4vulnerable
bookworm (security)5.15.0+dfsg1+~cs20.10.9.3-1+deb12u3vulnerable
trixie7.3.0+dfsg1+~cs24.12.11-1vulnerable
forky, sid8.12.2+dfsg+~cs3.2.3-2vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
node-undicisource(unstable)(unfixed)1153360

Notes

https://github.com/nodejs/undici/security/advisories/GHSA-3g9m-rv3r-w5w2

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