Erlang/OTP 27.3.4.7

This release of Erlang/OTP can be built from source or installed using pre-built packages for your OS or third-party tools (such as kerl, asdf or mise).

docker run -it erlang:27.3.4.7
Erlang/OTP 27.3.4.7
View on github.com
Patch Package OTP 27.3.4.7
Git Tag OTP-27.3.4.7
Date 2026-02-05
Issue Id
ERIERL-1260
ERIERL-1268
System OTP
Release 27
Application

compiler-8.6.1.3 #

The compiler-8.6.1.3 application can be applied independently of other applications on a full OTP 27 installation.

OTP-19845
Related Id(s):

GH-10354, PR-10358

Fixed broken type inference for lists:mapfoldl/r.

OTP-19951
Related Id(s):

PR-10588

Fix a compiler alias analysis bug that can generate unsafe code for repeated binary segments.

Full runtime dependencies of compiler-8.6.1.3

crypto-5.1, erts-13.0, kernel-8.4, stdlib-6.0

erts-15.2.7.5 #

The erts-15.2.7.5 application can be applied independently of other applications on a full OTP 27 installation.

OTP-19846
Related Id(s):

PR-10359

Fixed a JIT bug that could miscompile equality tests on empty bitstrings.

OTP-19926
Related Id(s):

PR-10547

Fail the windows build properly when nsis is not recognised.

Full runtime dependencies of erts-15.2.7.5

kernel-9.0, sasl-3.3, stdlib-4.1

megaco-4.7.2.1 #

The megaco-4.7.2.1 application can be applied independently of other applications on a full OTP 27 installation.

OTP-19896

The megaco_tcp module had debug unintentionally enabled.

Full runtime dependencies of megaco-4.7.2.1

asn1-3.0, debugger-4.0, erts-12.0, et-1.5, kernel-8.0, runtime_tools-1.8.14, stdlib-2.5

mnesia-4.23.5.1 #

The mnesia-4.23.5.1 application can be applied independently of other applications on a full OTP 27 installation.

OTP-19890
Related Id(s):

ERIERL-1268, PR-10482

Fixed bug where mnesia:del_table_copy/3 could fail when deleting a node that had tables which was not active anywhere.

Full runtime dependencies of mnesia-4.23.5.1

erts-9.0, kernel-5.3, stdlib-5.0

ssl-11.2.12.5 #

Note! The ssl-11.2.12.5 application cannot be applied independently of other applications on an arbitrary OTP 27 installation.

   On a full OTP 27 installation, also the following runtime
   dependency has to be satisfied:
   -- public_key-1.16.4 (first satisfied in OTP 27.1.3)
OTP-19795
Related Id(s):

PR-10465

Correct TLS-1.3 alert handling so server will always send the alert with the encryption keys that the client is expecting, that is if for instance if client certification fails the alert will be sent using application traffic encryption keys.

OTP-19830
Related Id(s):

PR-10339

If two certificate massages are sent to the server generate an unexpected message alert for the second one.

OTP-19893
Related Id(s):

PR-10480

Corrected app environment handling for session callback that was broken In OTP-23.

OTP-19948
Related Id(s):

PR-10599

When preforming renegotiation, in TLS-1.2 or previous TLS versions, max_frag_length should not be renegotiated the connection should adhere to originally negotiated value, and if a value was not negotiated it shall not be negotiated now either.

Full runtime dependencies of ssl-11.2.12.5

crypto-5.0, erts-15.0, inets-5.10.7, kernel-9.0, public_key-1.16.4, runtime_tools-1.15.1, stdlib-6.0

xmerl-2.1.3.3 #

The xmerl-2.1.3.3 application can be applied independently of other applications on a full OTP 27 installation.

OTP-19762
Related Id(s):

ERIERL-1260, PR-10437

XML regular expressions in XSD validation now handle \s and \S correctly.

Full runtime dependencies of xmerl-2.1.3.3

erts-6.0, kernel-8.4, stdlib-2.5

Thanks To #

Nelson Vides