ESB-2026.6297

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.6297 CVE-2026-48913: Apache HTTP Server: mod_http2 memory corruption when file handles exhausted 9 June 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Apache HTTP server Publisher: Apache Software Foundation Operating System: Windows UNIX variants (UNIX, Linux, OSX) Resolution: Patch/Upgrade CVE Names: CVE-2026-48913 Original Bulletin: https://httpd.apache.org/security/vulnerabilities_24.html Comment: CVSS (Max): 7.3 CVE-2026-48913 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L) CVSS Source: CISA-ADP Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L EPSS (Max): None available when published - --------------------------BEGIN INCLUDED TEXT-------------------- Severity: low Affected versions: - Apache HTTP Server 2.4.55 through 2.4.67 Description: Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67. Credit: Sam Lovejoy, IBM X-Force Offensive Research (XOR) (finder) References: https://httpd.apache.org/security/vulnerabilities_24.html https://httpd.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-48913 Timeline: 2026-05-22: reported 2026-06-03: fixed in 2.4.x by r1934882 2026-06-08: 2.4.68 released - --------------------------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 ===========================================================================