ESB-2026.5388

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.5388 erlang security update 19 May 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: erlang Publisher: Debian Operating System: Debian GNU/Linux Resolution: Patch/Upgrade CVE Names: CVE-2026-23943 CVE-2026-21620 CVE-2026-23941 CVE-2026-23942 Original Bulletin: https://lists.debian.org/debian-lts-announce/2026/05/msg00034.html Comment: CVSS (Max): 7.0 CVE-2026-23941 (CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L) CVSS Source: EEF Calculator: https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L EPSS (Max): 0.1% (21st) CVE-2026-23943 2026-05-18 - --------------------------BEGIN INCLUDED TEXT-------------------- - ------------------------------------------------------------------------- Debian LTS Advisory DLA-4590-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ Lucas Kanashiro May 18, 2026 https://wiki.debian.org/LTS - ------------------------------------------------------------------------- Package : erlang Version : 1:23.2.6+dfsg-1+deb11u4 CVE ID : CVE-2026-21620 CVE-2026-23941 CVE-2026-23942 CVE-2026-23943 Debian Bug : 1128651 1130912 Multiple vulnerabilities were discoverd in Erlang, a concurrent, real-time, distributed functional language. CVE-2026-21620 Insufficient path sanitizing in tftp_file module. CVE-2026-23941 Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in Erlang OTP (inets httpd module) allows HTTP Request Smuggling. CVE-2026-23942 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Erlang OTP (ssh_sftpd module) allows Path Traversal. CVE-2026-23943 Improper Handling of Highly Compressed Data (Compression Bomb) vulnerability in Erlang OTP ssh (ssh_transport modules) allows Denial of Service via Resource Depletion. For Debian 11 bullseye, these problems have been fixed in version 1:23.2.6+dfsg-1+deb11u4. We recommend that you upgrade your erlang packages. For the detailed security status of erlang please refer to its security tracker page at: https://security-tracker.debian.org/tracker/erlang Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================