Information Exposure Through Caching Affecting nodejs26 package, versions <0:26.7.0-1.5.2.hum1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.25% (16th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-RHEL10-NODEJS26-19536141
  • published5 Sept 2026
  • disclosed4 Sept 2026

Introduced: 4 Sep 2026

NewCVE-2026-84933  (opens in a new tab)
CWE-524  (opens in a new tab)

How to fix?

Upgrade RHEL:10 nodejs26 to version 0:26.7.0-1.5.2.hum1 or higher.
This issue was patched in RHSA-2026:54389.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nodejs26 package and not the nodejs26 package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

undici's cache interceptor does not handle the Set-Cookie response header anywhere in its cache path, so it neither refuses to store nor strips that header. In shared cache mode, which is the default, an otherwise cacheable response that carries a Set-Cookie header, for example one marked with a public and max-age directive, is stored and then re-served to a later caller that matches the same cache key. As a result one caller's cookie is disclosed to a different caller, and an untrusted server can inject cookies into cached responses served to all subsequent callers. This violates the requirement that a shared cache must not store cookies. This affects undici versions from 7.0.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.

CVSS Base Scores

version 3.1