CVE-2026-49975

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://httpd.apache.org/security/vulnerabilities_24.html	Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/06/03/3	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/06/08/16	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2026/06/msg00009.html	Mailing List Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:25042
https://access.redhat.com/errata/RHSA-2026:25057
https://access.redhat.com/errata/RHSA-2026:25090
https://access.redhat.com/errata/RHSA-2026:25225
https://access.redhat.com/errata/RHSA-2026:27114
https://access.redhat.com/errata/RHSA-2026:27200
https://access.redhat.com/errata/RHSA-2026:27201
https://access.redhat.com/errata/RHSA-2026:36373
https://access.redhat.com/errata/RHSA-2026:36831
https://access.redhat.com/errata/RHSA-2026:36846
https://access.redhat.com/errata/RHSA-2026:50538
https://access.redhat.com/errata/RHSA-2026:50572
https://access.redhat.com/errata/RHSA-2026:55930
https://access.redhat.com/errata/RHSA-2026:55992
https://access.redhat.com/security/cve/CVE-2026-49975
https://bugzilla.redhat.com/show_bug.cgi?id=2485371
https://github.com/EQSTLab/CVE-2026-49975	Exploit Third Party Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49975.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:http_server::::::::
	cpe:2.3:o:debian:debian_linux:11.0:::::::*

History

No history.

Information

Published : 2026-06-08 16:16

Updated : 2026-08-19 12:18

NVD link : CVE-2026-49975

Mitre link : CVE-2026-49975

CVE.ORG link : CVE-2026-49975

JSON object : View

Products Affected

apache

http_server

debian

debian_linux

CWE

CWE-789

Memory Allocation with Excessive Size Value

CWE-409

Improper Handling of Highly Compressed Data (Data Amplification)

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"description": [{"lang": "en", "value": "CWE-789"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-409"}]}], "descriptions": [{"lang": "en", "value": "Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of service via malicious HTTP requests.\n\nThis issue affects Apache HTTP Server: from 2.4.17 through 2.4.67."}, {"lang": "es", "value": "Vulnerabilidad de asignaci\u00f3n de memoria con valor de tama\u00f1o excesivo en el mod_http del Servidor HTTP Apache conduce a denegaci\u00f3n de servicio a trav\u00e9s de solicitudes HTTP maliciosas.\n\nEste problema afecta al Servidor HTTP Apache: desde 2.4.17 hasta 2.4.67."}], "lastModified": "2026-08-19T12:18:28.650", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DD819875-456D-45A6-90C9-4EDA544029A4", "versionEndExcluding": "2.4.68", "versionStartIncluding": "2.4.17"}, {"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"}], "operator": "OR"}]}], "sourceIdentifier": "security@apache.org"}