Patch Package OTP 27.3.4.11 Released

erlangforums · April 21, 2026, 11:19am

A new Erlang announcement has been posted:

Patch Package:           OTP 27.3.4.11
Git Tag:                 OTP-27.3.4.11
Date:                    2026-04-21
Trouble Report Id:       OTP-20081, OTP-20086, OTP-20094, OTP-20098,
                         OTP-20101
Seq num:                 CVE-2026-32147, GH-10667, GH-10967, PR-10976,
                         PR-10985, PR-11002, PR-11027
System:                  OTP
Release:                 27
Application:             erts-15.2.7.8, mnesia-4.23.5.2, ssh-5.2.11.7
Predecessor:             OTP 27.3.4.10
Check out the git tag OTP-27.3.4.11, and build a full OTP system including
documentation. Apply one or more applications from this build as patches to your
installation using the ‘otp_patch_apply’ tool. For information on install
requirements, see descriptions for each application version below.

OTP-27.3.4.11

Fixed Bugs and Malfunctions

Fix the otp_patch_apply script to properly handle installation of
documentation for OTP versions with more than one digit in version parts less
significant than the major version.

Own Id: OTP-20086
Related Id(s): PR-10985

erts-15.2.7.8

The erts-15.2.7.8 application can be applied independently of other applications
on a full OTP 27 installation.

Fixed Bugs and Malfunctions

Fixed bug in enif_make_map_from_arrays for arrays with at least 33 keys. If
duplicate keys existed, instead of failing, it would skip the duplicates. If
less than 33 unique keys existed, an internally inconsistent and broken map
was returned.

Own Id: OTP-20098
Related Id(s): PR-10976

Fixed an issue when supplying the args_file option to erl.exe on windows that
did not handle unicode characters correctly.

Own Id: OTP-20101
Related Id(s): GH-10667

Full runtime dependencies of erts-15.2.7.8

kernel-9.0, sasl-3.3, stdlib-4.1

mnesia-4.23.5.2

The mnesia-4.23.5.2 application can be applied independently of other
applications on a full OTP 27 installation.

Fixed Bugs and Malfunctions

Fixed a bug where stacktrace was not returned from mnesia:transaction/1 when
transaction aborts with an error exception.

Own Id: OTP-20094
Related Id(s): GH-10967, PR-11002

Full runtime dependencies of mnesia-4.23.5.2

erts-9.0, kernel-5.3, stdlib-5.0

ssh-5.2.11.7

The ssh-5.2.11.7 application can be applied independently of other applications
on a full OTP 27 installation.

Fixed Bugs and Malfunctions

Fixed a vulnerability in the SFTP server where file attributes could be
modified outside the configured root directory. When using FSETSTAT on an open
file handle, the operation used the path stored in the handle without
verifying it was within the root directory, allowing attribute changes to
files outside the chroot boundary.

Thanks to John Downey.

Own Id: OTP-20081
Related Id(s): PR-11027, CVE-2026-32147

Full runtime dependencies of ssh-5.2.11.7

crypto-5.0, erts-14.0, kernel-9.0, public_key-1.6.1, runtime_tools-1.15.1,
stdlib-5.0, stdlib-6.0

Thanks to

Nick Vatamaniuc

Original announcement: