NSS 3.112.4 release notes

Introduction 

Network Security Services (NSS) 3.112.4 was released on 13 April 2026*.

The HG tag is NSS_3_112_4_RTM. NSS 3.112.4 requires NSPR 4.36 or newer.

NSS 3.112.4 source distributions are available on ftp.mozilla.org for secure HTTPS download:

Other releases are available Release Notes.

Bug 2030135 - improve error handling in PK11_ImportPrivateKeyInfoAndReturnKey.
Bug 2029752 - Improving the allocation of S/MIME DecryptSymKey.
Bug 2029462 - store email on subject cache_entry in NSS trust domain.
Bug 2029425 - Heap use-after-free in cert_VerifyCertChainOld via dangling certsList[] entry on NameConstraints violation.
Bug 2029323 - Improve size calculations in CMS content buffering.
Bug 2028001 - avoid integer overflow while escaping RFC822 Names.
Bug 2027378 - Reject excessively large ASN.1 SEQUENCE OF in quickder.
Bug 2027365 - Deep copy profile data in CERT_FindSMimeProfile.
Bug 2027345 - Improve input validation in DSAU signature decoding.
Bug 2026311 - avoid integer overflow in RSA_EMSAEncodePSS.
Bug 2019357 - RSA_EMSAEncodePSS should validate the length of mHash.
Bug 2026156 - Add a maximum cert uncompressed len and tests.
Bug 2026089 - Clarify extension negotiation mechanism for TLS Handshakes.
Bug 2023209 - ensure permittedSubtrees don’t match wildcards that could be outside the permitted tree.
Bug 2023207 - Fix integer underflow in tls13_AEAD when ciphertext is shorter than tag.
Bug 2019224 - Remove invalid PORT_Free().
Bug 1964722 - free digest objects in SEC_PKCS7DecoderFinish if they haven’t already been freed.
Bug 1935995 - make ss->ssl3.hs.cookie an owned-copy of the cookie.