NSS 3.131.1 release notes

Introduction

Network Security Services (NSS) 3.131.1 was released on 20 October 2026.

Distribution Information

The HG tag is NSS_3_131_1_RTM. NSS 3.131.1 requires NSPR 4.39 or newer.

NSS 3.131.1 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_131_1_RTM/src/

Other releases are available Release Notes.

Changes in NSS 3.131.1

Bug 2084101 - Remove eMudhra emSign Root CA - G3 from NSS.
Bug 2083709 - Remove eMudhra emSign Root CA - C1 and emSign ECC Root CA - C3 from NSS.