Patch Package:           OTP 28.5.0.2
Git Tag:                 OTP-28.5.0.2
Date:                    2026-06-10
Trouble Report Id:       OTP-19631, OTP-20057, OTP-20149, OTP-20150,
                         OTP-20152, OTP-20154, OTP-20155, OTP-20156,
                         OTP-20160, OTP-20161, OTP-20162, OTP-20165,
                         OTP-20166, OTP-20172, OTP-20174
Seq num:                 CVE-2026-48855, CVE-2026-48856,
                         CVE-2026-48858, CVE-2026-48860,
                         CVE-2026-49759, CVE-2026-49760, GH-11093,
                         GH-11104, GH-11105, GH-SA-24cv-hwgr-37fq,
                         GH-SA-6f4f-chj5-5g97, GH-SA-gp7x-mfv6-52cv,
                         GH-SA-m75x-4vwg-ggjh, GH-SA-pv7g-pjrq-x2fh,
                         GH-SA-xcxj-5pg2-v72j, PR-11096, PR-11115,
                         PR-11145, PR-11146, PR-11148, PR-11181,
                         PR-11186, PR-11192, PR-11193, PR-11195,
                         PR-11212, PR-1234, PR-27384
System:                  OTP
Release:                 28
Application:             dialyzer-5.4.0.1, diameter-2.6.1.1,
                         erl_interface-5.7.0.1, erts-16.4.0.2,
                         ftp-1.2.4.1, inets-9.6.2.2, kernel-10.6.3.2,
                         mnesia-4.25.3.1, public_key-1.20.3.2,
                         ssh-5.5.2.1, ssl-11.6.0.2
Predecessor:             OTP 28.5.0.1

Check out the git tag OTP-28.5.0.2, 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.

dialyzer-5.4.0.1

The dialyzer-5.4.0.1 application can be applied independently of other applications on a full OTP 28 installation.

Fixed Bugs and Malfunctions

• Fix Dialyzer crash with overriding built-in types

  Own Id: OTP-19631
  Related Id(s): GH-11093, PR-11096

Full runtime dependencies of dialyzer-5.4.0.1

compiler-8.0, erts-12.0, kernel-8.0, stdlib-5.0, syntax_tools-2.0

diameter-2.6.1.1

The diameter-2.6.1.1 application can be applied independently of other applications on a full OTP 28 installation.

Fixed Bugs and Malfunctions

• Fixed return value documentation of diameter:service_info(SvcName, statistics)

  Own Id: OTP-20150
  Related Id(s): GH-11105, PR-11146

Full runtime dependencies of diameter-2.6.1.1

erts-10.0, kernel-3.2, ssl-9.0, stdlib-5.0

erl_interface-5.7.0.1

The erl_interface-5.7.0.1 application can be applied independently of other applications on a full OTP 28 installation.

Fixed Bugs and Malfunctions

• Fixed stack overflow in ei_s_print_term for very big integer terms (> 2000 hexadecimal digits long).

  Own Id: OTP-20160
  Related Id(s): GH-SA-xcxj-5pg2-v72j, PR-11193, CVE-2026-49760

erts-16.4.0.2

The erts-16.4.0.2 application can be applied independently of other applications on a full OTP 28 installation.

Fixed Bugs and Malfunctions

• Fixed bug in ets:member/2 for set, bag and duplicate_bag. The bug could (maybe) lead to ets:member spuriously returning false for a value which is actually a member for a table that faces high insert load.

  Own Id: OTP-20152
  Related Id(s): PR-11115

• A buffer overflow error when parsing SCTP ERROR or ABORT chunks has been fixed.

  This could lead to stack corruption and VM crash, but ultimately with hard work by an attacker be refined into maybe even remote code execution.

  Own Id: OTP-20165
  Related Id(s): GH-SA-6f4f-chj5-5g97, PR-1234, CVE-2026-49759

Full runtime dependencies of erts-16.4.0.2

kernel-9.0, sasl-3.3, stdlib-4.1

ftp-1.2.4.1

The ftp-1.2.4.1 application can be applied independently of other applications on a full OTP 28 installation.

Fixed Bugs and Malfunctions

• FTP client default connections that use the so called passive mode of FTP fails to properly validating the response IP of the server, hence a malicious or compromised FTP server could redirect the data connection to an arbitrary host, enabling s server-side request forgery (SSRF) and FTP bounce attacks.

  Own Id: OTP-20166
  Related Id(s): GH-SA-24cv-hwgr-37fq, PR-11186, CVE-2026-48858

Full runtime dependencies of ftp-1.2.4.1

erts-7.0, kernel-6.0, runtime_tools-1.15.1, ssl-10.2, stdlib-3.5

inets-9.6.2.2

The inets-9.6.2.2 application can be applied independently of other applications on a full OTP 28 installation.

Fixed Bugs and Malfunctions

• The HTTP client (httpc) now removes Authorization, Proxy-Authorization, Cookie, Referer, and Origin headers when following a redirect to a different host or port. Previously these headers were forwarded verbatim, potentially leaking credentials to unintended targets.

  This follows the requirements of RFC 9110 §15.4.

  Own Id: OTP-20155
  Related Id(s): GH-SA-m75x-4vwg-ggjh, PR-11212, CVE-2026-48856

Full runtime dependencies of inets-9.6.2.2

erts-14.0, kernel-9.0, mnesia-4.12, public_key-1.13, runtime_tools-1.8.14, ssl-9.0, stdlib-5.0, stdlib-6.0

kernel-10.6.3.2

The kernel-10.6.3.2 application can be applied independently of other applications on a full OTP 28 installation.

Fixed Bugs and Malfunctions

• gen_tcp_socket accept should explicitly inherit the same options as plain gen_tcp.

  Own Id: OTP-20057

Full runtime dependencies of kernel-10.6.3.2

crypto-5.0, erts-15.2.5, sasl-3.0, stdlib-7.0

mnesia-4.25.3.1

The mnesia-4.25.3.1 application can be applied independently of other applications on a full OTP 28 installation.

Fixed Bugs and Malfunctions

• Fixed docs of mnesia:write/3 to clarify when a transaction can terminate.

  Own Id: OTP-20149
  Related Id(s): GH-11104, PR-11145

Full runtime dependencies of mnesia-4.25.3.1

erts-9.0, kernel-5.3, stdlib-5.0

public_key-1.20.3.2

Note! The public_key-1.20.3.2 application cannot be applied independently of other applications on an arbitrary OTP 28 installation.

   On a full OTP 28 installation, also the following runtime
   dependency has to be satisfied:
   -- crypto-5.8 (first satisfied in OTP 28.3)

Fixed Bugs and Malfunctions

• Add missing macro reference for legacy algorithms md5 and sha224. This mainly improves error handling.

  Own Id: OTP-20172
  Related Id(s): PR-11195

Full runtime dependencies of public_key-1.20.3.2

asn1-5.0, crypto-5.8, erts-13.0, kernel-8.0, stdlib-4.0

ssh-5.5.2.1

Note! The ssh-5.5.2.1 application cannot be applied independently of other applications on an arbitrary OTP 28 installation.

   On a full OTP 28 installation, also the following runtime
   dependency has to be satisfied:
   -- crypto-5.7 (first satisfied in OTP 28.1)

Fixed Bugs and Malfunctions

• Fixed SSH_FXP_READLINK handler in ssh_sftpd to strip the backend root prefix from symlink targets before returning them to the client, preventing disclosure of the server's absolute filesystem path when the root option is configured.

  Own Id: OTP-20162
  Related Id(s): GH-SA-pv7g-pjrq-x2fh, PR-11192, CVE-2026-48855

Full runtime dependencies of ssh-5.5.2.1

crypto-5.7, erts-14.0, kernel-10.3, public_key-1.6.1, runtime_tools-1.15.1, stdlib-5.0, stdlib-6.0

ssl-11.6.0.2

Note! The ssl-11.6.0.2 application cannot be applied independently of other applications on an arbitrary OTP 28 installation.

   On a full OTP 28 installation, also the following runtime
   dependencies have to be satisfied:
   -- crypto-5.8 (first satisfied in OTP 28.3)
   -- public_key-1.20.3.1 (first satisfied in OTP 28.5.0.1)

Fixed Bugs and Malfunctions

• Fix miscellanies issues that could cause unnecessary memory consumption and in some less common scenarios or configurations cause connection failures.

  Own Id: OTP-20154
  Related Id(s): PR-11148

• Erlang distribution over TLS run with the kernel 'check_ip' flag now properly enforce connecting nodes to be on the same LAN.

  Own Id: OTP-20156
  Related Id(s): GH-SA-gp7x-mfv6-52cv, PR-11181, CVE-2026-48860

• Enhance error message, by fixing typo of atom in new error message related to `public_key` CVE-2026-42790 solution.

  Own Id: OTP-20161
  Related Id(s): PR-11148

• Corrected SNI handling for TLS-1.3 only server, could cause connection failures if supported signature algorithms where changed by SNI option update.

  Own Id: OTP-20174
  Related Id(s): PR-27384

Full runtime dependencies of ssl-11.6.0.2

crypto-5.8, erts-16.0, inets-5.10.7, kernel-10.3, public_key-1.20.3.1, runtime_tools-1.15.1, stdlib-7.0

Thanks to

John Downey, Jonatan Männchen, Maria Scott