SUSE alert openSUSE-SU-2026:20607-1 (erlang)

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openSUSE-SU-2026:20607-1: important: Security update for erlang
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Thu, 23 Apr 2026 11:14:12 +0200
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<20260423091412.22137FB96@maintenance.suse.de>
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Article
openSUSE security update: security update for erlang
-------------------------------------------------------------

Announcement ID: openSUSE-SU-2026:20607-1
Rating: important
References:

  * bsc#1258663
  * bsc#1259681
  * bsc#1259682
  * bsc#1259687
  * bsc#1261726
  * bsc#1261728
  * bsc#1261734
  * bsc#1262288



Cross-References:

  * CVE-2026-21620
  * CVE-2026-23941
  * CVE-2026-23942
  * CVE-2026-23943
  * CVE-2026-28808
  * CVE-2026-28810
  * CVE-2026-32144



CVSS scores:

  * CVE-2026-21620 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-21620 ( SUSE ): 7.6 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-23941 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-23941 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-23942 ( SUSE ): 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-23942 ( SUSE ): 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-23943 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-23943 ( SUSE ): 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-28808 ( SUSE ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-28808 ( SUSE ): 9.1 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-28810 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
  * CVE-2026-28810 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-32144 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
  * CVE-2026-32144 ( SUSE ): 7.6 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Affected Products:

         openSUSE Leap 16.0

-------------------------------------------------------------

An update that solves 7 vulnerabilities and has 8 bug fixes can now be installed.

Description:

This update for erlang fixes the following issues:

Security issues fixed:

- CVE-2026-21620: improper isolation and compartmentalization can lead to TFTP relative path
traversal and remote
  arbitrary reads/writes (bsc#1258663).
- CVE-2026-23941: improper handling of duplicate Content-Length headers in Erlang OTP can lead to
HTTP request
  smuggling (bsc#1259687).
- CVE-2026-23942: improper limitation of a pathname to a restricted directory in the SFTP server
can lead to path
  traversal (bsc#1259681).
- CVE-2026-23943: improper handling of highly compressed data in Erlang OTP ssh can lead to denial
of service
  (bsc#1259682).
- CVE-2026-28808: incorrect authorization can lead to unauthenticated access to protected CGI
scripts (bsc#1261728).
- CVE-2026-28810: predictable DNS transaction IDs can lead to DNS cache poisoning (bsc#1261726).
- CVE-2026-32144: missing signature verification can lead to OCSP authorization bypass and
information disclosure
  (bsc#1261734).

Other updates and bugfixes:

- jinterface: allow to build determenistic OtpErlang.jar (bsc#1262288).


Patch instructions:

   To install this openSUSE security update use the suse recommended installation methods
   like YaST online_update or "zypper patch".
   Alternatively you can run the command listed for your product:

- openSUSE Leap 16.0

   zypper in -t patch openSUSE-Leap-16.0-619=1

Package List:

- openSUSE Leap 16.0:

  erlang-27.1.3-160000.4.1
  erlang-debugger-27.1.3-160000.4.1
  erlang-debugger-src-27.1.3-160000.4.1
  erlang-dialyzer-27.1.3-160000.4.1
  erlang-dialyzer-src-27.1.3-160000.4.1
  erlang-diameter-27.1.3-160000.4.1
  erlang-diameter-src-27.1.3-160000.4.1
  erlang-doc-27.1.3-160000.4.1
  erlang-epmd-27.1.3-160000.4.1
  erlang-et-27.1.3-160000.4.1
  erlang-et-src-27.1.3-160000.4.1
  erlang-jinterface-27.1.3-160000.4.1
  erlang-jinterface-src-27.1.3-160000.4.1
  erlang-observer-27.1.3-160000.4.1
  erlang-observer-src-27.1.3-160000.4.1
  erlang-reltool-27.1.3-160000.4.1
  erlang-reltool-src-27.1.3-160000.4.1
  erlang-src-27.1.3-160000.4.1
  erlang-wx-27.1.3-160000.4.1
  erlang-wx-src-27.1.3-160000.4.1

References:

  * https://www.suse.com/security/cve/CVE-2026-21620.html
  * https://www.suse.com/security/cve/CVE-2026-23941.html
  * https://www.suse.com/security/cve/CVE-2026-23942.html
  * https://www.suse.com/security/cve/CVE-2026-23943.html
  * https://www.suse.com/security/cve/CVE-2026-28808.html
  * https://www.suse.com/security/cve/CVE-2026-28810.html
  * https://www.suse.com/security/cve/CVE-2026-32144.html