CVE-2026-49975
HIGH severity · CVSS 7.5 · CWE-789
7.5CVSS HIGH
Summary
Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of service via malicious HTTP requests. This issue affects Apache HTTP Server: from 2.4.17 through 2.4.67.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (3)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://httpd.apache.org/security/vulnerabilities_24.htmlAdvisory
- http://www.openwall.com/lists/oss-security/2026/06/03/3Advisory
- http://www.openwall.com/lists/oss-security/2026/06/08/16Advisory
- https://lists.debian.org/debian-lts-announce/2026/06/msg00009.htmlAdvisory
- https://github.com/EQSTLab/CVE-2026-49975