CVE-2026-84961 Affecting nodejs-packaging-bundler package, versions <0:2021.06-6.module+el9.7.0+40165+d075e3f2


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.15% (4th percentile)

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  • Snyk IDSNYK-ROCKY9-NODEJSPACKAGINGBUNDLER-20357306
  • published1 Oct 2026
  • disclosed4 Sept 2026

Introduced: 4 Sep 2026

CVE-2026-84961  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 nodejs-packaging-bundler to version 0:2021.06-6.module+el9.7.0+40165+d075e3f2 or higher.
This issue was patched in RLSA-2026:73838.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nodejs-packaging-bundler package and not the nodejs-packaging-bundler package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:9 relevant fixed versions and status.

undici's BalancedPool constructor passes its entire options object through an internal deep-clone that serializes and reparses the value as JSON. Because JSON cannot represent functions, any function-valued TLS option, such as a caller-supplied checkServerIdentity callback or a custom connector inside the connect option, is silently discarded before it reaches the TLS layer. As a result a peer whose certificate the application's custom checkServerIdentity was written to reject, but which still passes Node's default hostname and chain checks, is accepted when reached through BalancedPool. The Client, Pool, and Agent dispatchers are not affected because they extract the connect and tls options before cloning. This affects undici versions from 7.24.1 up to 7.29.1 and from 8.0.0 up to 8.10.2, and only when the application supplies a function-valued connect or tls option to BalancedPool. Users should upgrade to undici 7.29.1 or 8.10.2.

CVSS Base Scores

version 3.1