ESB-2026.5255

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.5255 nginx security update 18 May 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: nginx Publisher: Debian Operating System: Debian GNU/Linux Resolution: Patch/Upgrade CVE Names: CVE-2026-42946 CVE-2026-42934 CVE-2026-40460 CVE-2026-40701 CVE-2026-42945 Original Bulletin: https://lists.debian.org/debian-security-announce/2026/msg00189.html Comment: CVSS (Max): 8.1 CVE-2026-42945 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H) CVSS Source: F5 Networks Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H EPSS (Max): 0.1% (34th) CVE-2026-42945 2026-05-17 - --------------------------BEGIN INCLUDED TEXT-------------------- - ------------------------------------------------------------------------- Debian Security Advisory DSA-6278-1 security@debian.org https://www.debian.org/security/ Moritz Muehlenhoff May 16, 2026 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : nginx CVE ID : CVE-2026-40701 CVE-2026-42934 CVE-2026-42945 CVE-2026-42946 CVE-2026-40460 Multiple vulnerabilities were discoverd in Nginx, a high-performance web and reverse proxy server, which could result in bypass of authorisation rules or rate limits, denial of service or memory disclosure. For the oldstable distribution (bookworm), these problems have been fixed in version 1.22.1-9+deb12u7. For the stable distribution (trixie), these problems have been fixed in version 1.26.3-3+deb13u5. We recommend that you upgrade your nginx packages. For the detailed security status of nginx please refer to its security tracker page at: https://security-tracker.debian.org/tracker/nginx Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ - --------------------------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 ===========================================================================