(mozilla-projects-nss-nss-3-126-1-release-notes)=

# NSS 3.126.1 release notes

## [Introduction](#introduction)

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Network Security Services (NSS) 3.126.1 was released on *13 August 2026*.
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## [Distribution Information](#distribution_information)

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The HG tag is NSS_3_126_1_RTM. NSS 3.126.1 requires NSPR 4.39 or newer.

NSS 3.126.1 source distributions are available on ftp.mozilla.org for secure HTTPS download:

- Source tarballs:
  <https://ftp.mozilla.org/pub/mozilla.org/security/nss/releases/NSS_3_126_1_RTM/src/>

Other releases are available {ref}`mozilla_projects_nss_releases`.
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(changes-in-nss-3-126-1)=

## [Changes in NSS 3.126.1](#changes_in_nss_3.126.1)

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- Bug 2054719 - fix content type tag for CMS AuthEnvelopedData plaintext.
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