CVE-2026-48931

NameCVE-2026-48931
DescriptionA flaw in Node.js HTTP Agent can cause a client to accept as valid a response that is send before the client has sent the request. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
nodejs (PTS)bullseye12.22.12~dfsg-1~deb11u4vulnerable
bullseye (security)12.22.12~dfsg-1~deb11u8vulnerable
bookworm18.20.4+dfsg-1~deb12u1vulnerable
bookworm (security)18.20.4+dfsg-1~deb12u2vulnerable
trixie (security), trixie20.19.2+dfsg-1+deb13u2vulnerable
forky, sid24.18.0+dfsg+~cs24.13.2-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
nodejssource(unstable)24.17.0+dfsg+~cs24.13.2-1

Notes

https://nodejs.org/en/blog/vulnerability/june-2026-security-releases#http-response-queue-poisoning-via-toctou-race-condition-in-httpagent-cve-2026-48931---low
https://github.com/nodejs/node/commit/0a22d40180cb796e0d68e94c1a7a8a05a8f47c10 (v22.23.0)

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