Upstream information

CVE-2026-54891 at MITRE

Description

Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl (tls_gen_connection module) allows a network-positioned attacker to inject unauthenticated plaintext that the TLS client application later treats as authenticated server data.

The function tls_gen_connection:handle_protocol_record/3 rejects APPLICATION_DATA records that arrive in pre-handshake states when the TLS endpoint acts as a server, but does not apply the same check when the endpoint acts as a client. A network-positioned attacker can send plaintext APPLICATION_DATA records to the client during the handshake. The records are buffered and, once the handshake completes successfully, delivered to the application as if they were authenticated post-handshake data. The attacker cannot observe the client's response or steer the connection, so the impact is limited to blind injection of unauthenticated bytes. The injection window is wider for TLS versions prior to TLS 1.3 than for TLS 1.3.

This vulnerability is associated with program file lib/ssl/src/tls_gen_connection.erl.

TLS 1.3 is affected starting with OTP 22.0, when TLS 1.3 support was added.

This issue affects OTP from OTP 17.0 before OTP 27.3.4.14, from OTP 28.0 before OTP 28.5.0.3, and from OTP 29.0 before OTP 29.0.3, corresponding to ssl from 5.3.4 before 11.2.12.10, from 11.3 before 11.6.0.3, and from 11.7 before 11.7.3. Whether OTP before OTP 17.0, corresponding to ssl before 5.3.4, is affected is unknown.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having low severity.

CVSS v3 Scores
CVSS detail National Vulnerability Database SUSE
Base Score 3.7 3.7
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Vector Network Network
Attack Complexity High High
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact Low Low
Availability Impact None None
CVSSv3 Version 3.1 3.1
CVSS v4 Scores
CVSS detail CNA (6b3ad84c-e1a6-4bf7-a703-f496b71e49db) SUSE
Base Score 6.3 6.3
Vector CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Attack Vector Network Network
Attack Complexity High High
Attack Requirements Present Present
Privileges Required None None
User Interaction None None
Vulnerable System Confidentiality Impact None None
Vulnerable System Integrity Impact Low Low
Vulnerable System Availability Impact None None
Subsequent System Confidentiality Impact None None
Subsequent System Integrity Impact None None
Subsequent System Availability Impact None None
CVSSv4 Version 4.0 4.0
SUSE Bugzilla entry: 1270250 [IN_PROGRESS]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-3645 (aarch64,x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-3645 (aarch64,x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-3645 (aarch64,x86_64)
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-3645 (aarch64,x86_64)
SUSE Linux Enterprise Module for Server Applications 15 SP7
SUSE Linux Enterprise Server 15 SP7
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
  • erlang26 >= 26.2.1-150300.7.28.1
  • erlang26-epmd >= 26.2.1-150300.7.28.1
 Patchnames:
SUSE-SLE-Module-Server-Applications-15-SP7-2026-3579 (aarch64,ppc64le,s390x,x86_64)
SUSE-SLE-Module-Server-Applications-15-SP7-2026-3645 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server 15 SP4-LTSS
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-3645 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server 15 SP5-LTSS
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-3645 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server 15 SP6-LTSS
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
  • erlang26 >= 26.2.1-150300.7.28.1
  • erlang26-epmd >= 26.2.1-150300.7.28.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-3579 (aarch64,ppc64le,s390x,x86_64)
SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-3645 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP4-2026-3645 (ppc64le,x86_64)
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP5-2026-3645 (ppc64le,x86_64)
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
  • erlang26 >= 26.2.1-150300.7.28.1
  • erlang26-epmd >= 26.2.1-150300.7.28.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP6-2026-3579 (ppc64le,x86_64)
SUSE-SLE-Product-SLES_SAP-15-SP6-2026-3645 (ppc64le,x86_64)
SUSE Manager Proxy LTS 4.3
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Proxy-4.3-LTS-2026-3645 (x86_64)
SUSE Manager Retail Branch Server LTS 4.3
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.3-LTS-2026-3645 (x86_64)
SUSE Manager Server LTS 4.3
  • erlang >= 23.3.4.19-150300.3.39.1
  • erlang-epmd >= 23.3.4.19-150300.3.39.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Server-4.3-LTS-2026-3645 (ppc64le,s390x,x86_64)
openSUSE Tumbleweed
  • erlang >= 28.5.0.4-1.1
  • erlang-debugger >= 28.5.0.4-1.1
  • erlang-debugger-src >= 28.5.0.4-1.1
  • erlang-dialyzer >= 28.5.0.4-1.1
  • erlang-dialyzer-src >= 28.5.0.4-1.1
  • erlang-diameter >= 28.5.0.4-1.1
  • erlang-diameter-src >= 28.5.0.4-1.1
  • erlang-doc >= 28.5.0.4-1.1
  • erlang-epmd >= 28.5.0.4-1.1
  • erlang-et >= 28.5.0.4-1.1
  • erlang-et-src >= 28.5.0.4-1.1
  • erlang-jinterface >= 28.5.0.4-1.1
  • erlang-jinterface-src >= 28.5.0.4-1.1
  • erlang-observer >= 28.5.0.4-1.1
  • erlang-observer-src >= 28.5.0.4-1.1
  • erlang-reltool >= 28.5.0.4-1.1
  • erlang-reltool-src >= 28.5.0.4-1.1
  • erlang-src >= 28.5.0.4-1.1
  • erlang-wx >= 28.5.0.4-1.1
  • erlang-wx-src >= 28.5.0.4-1.1
  • erlang27 >= 27.1.3-3.1
  • erlang27-debugger >= 27.1.3-3.1
  • erlang27-debugger-src >= 27.1.3-3.1
  • erlang27-dialyzer >= 27.1.3-3.1
  • erlang27-dialyzer-src >= 27.1.3-3.1
  • erlang27-diameter >= 27.1.3-3.1
  • erlang27-diameter-src >= 27.1.3-3.1
  • erlang27-doc >= 27.1.3-3.1
  • erlang27-epmd >= 27.1.3-3.1
  • erlang27-et >= 27.1.3-3.1
  • erlang27-et-src >= 27.1.3-3.1
  • erlang27-jinterface >= 27.1.3-3.1
  • erlang27-jinterface-src >= 27.1.3-3.1
  • erlang27-observer >= 27.1.3-3.1
  • erlang27-observer-src >= 27.1.3-3.1
  • erlang27-reltool >= 27.1.3-3.1
  • erlang27-reltool-src >= 27.1.3-3.1
  • erlang27-src >= 27.1.3-3.1
  • erlang27-wx >= 27.1.3-3.1
  • erlang27-wx-src >= 27.1.3-3.1
 Patchnames:
openSUSE-Tumbleweed-2026-11559
openSUSE-Tumbleweed-2026-11560

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Module for Server Applications 15 SP7 erlang Released
SUSE Linux Enterprise Module for Server Applications 15 SP7 erlang26 Released
SUSE Linux Enterprise Server 15 SP7 erlang Released
SUSE Linux Enterprise Server 15 SP7 erlang26 Released
SUSE Linux Enterprise Server 16.0 erlang Affected
SUSE Linux Enterprise Server 16.1 erlang Released
SUSE Linux Enterprise Server for SAP Applications 15 SP7 erlang Released
SUSE Linux Enterprise Server for SAP Applications 15 SP7 erlang26 Released
SUSE Linux Enterprise Server for SAP applications 16.0 erlang Affected
SUSE Linux Enterprise Server for SAP applications 16.1 erlang Released
openSUSE Leap 16.0 erlang Affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS erlang Released
SUSE Linux Enterprise High Performance Computing 15 SP5 erlang Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS erlang Released
SUSE Linux Enterprise Module for Server Applications 15 SP4 erlang Affected
SUSE Linux Enterprise Module for Server Applications 15 SP5 erlang Affected
SUSE Linux Enterprise Module for Server Applications 15 SP6 erlang Affected
SUSE Linux Enterprise Module for Server Applications 15 SP6 erlang26 Affected
SUSE Linux Enterprise Server 15 SP4 erlang Affected
SUSE Linux Enterprise Server 15 SP4-LTSS erlang Released
SUSE Linux Enterprise Server 15 SP5 erlang Affected
SUSE Linux Enterprise Server 15 SP5-LTSS erlang Released
SUSE Linux Enterprise Server 15 SP6 erlang Affected
SUSE Linux Enterprise Server 15 SP6 erlang26 Affected
SUSE Linux Enterprise Server 15 SP6-LTSS erlang Released
SUSE Linux Enterprise Server 15 SP6-LTSS erlang26 Released
SUSE Linux Enterprise Server for SAP Applications 15 SP4 erlang Released
SUSE Linux Enterprise Server for SAP Applications 15 SP5 erlang Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 erlang Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 erlang26 Released
Products past their end of life and not receiving proactive updates anymore.
SUSE Enterprise Storage 7 erlang Affected
SUSE Enterprise Storage 7.1 erlang Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 erlang Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS erlang Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS erlang Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 erlang Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS erlang Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS erlang Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 erlang Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS erlang Released
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS erlang Released
SUSE Linux Enterprise Module for Server Applications 15 SP2 erlang Affected
SUSE Linux Enterprise Module for Server Applications 15 SP3 erlang Affected
SUSE Linux Enterprise Real Time 15 SP2 erlang Affected
SUSE Linux Enterprise Real Time 15 SP3 erlang Affected
SUSE Linux Enterprise Real Time 15 SP4 erlang Affected
SUSE Linux Enterprise Server 15 SP2 erlang Affected
SUSE Linux Enterprise Server 15 SP2-BCL erlang Affected
SUSE Linux Enterprise Server 15 SP2-LTSS erlang Affected
SUSE Linux Enterprise Server 15 SP3 erlang Affected
SUSE Linux Enterprise Server 15 SP3-BCL erlang Affected
SUSE Linux Enterprise Server 15 SP3-LTSS erlang Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 erlang Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 erlang Affected
SUSE Manager Proxy 4.1 erlang Affected
SUSE Manager Proxy 4.2 erlang Affected
SUSE Manager Proxy 4.3 erlang Affected
SUSE Manager Proxy LTS 4.3 erlang Released
SUSE Manager Retail Branch Server 4.1 erlang Affected
SUSE Manager Retail Branch Server 4.2 erlang Affected
SUSE Manager Retail Branch Server 4.3 erlang Affected
SUSE Manager Retail Branch Server LTS 4.3 erlang Released
SUSE Manager Server 4.1 erlang Affected
SUSE Manager Server 4.2 erlang Affected
SUSE Manager Server 4.3 erlang Affected
SUSE Manager Server LTS 4.3 erlang Released
openSUSE Leap 15.3 erlang Released
openSUSE Leap 15.3 erlang26 Released
openSUSE Leap 15.4 erlang Affected
openSUSE Leap 15.5 erlang Affected
openSUSE Leap 15.6 erlang Affected
openSUSE Leap 15.6 erlang26 Affected

SUSE Timeline for this CVE

CVE page created: Thu Jul 2 20:05:25 2026
CVE page last modified: Tue Sep 1 11:41:09 2026