Vulnerability Report

CVE-2026-49975

Title: Memory Allocation with Excessive Size Value in Apache HTTP Server mod_http

DoS

Proof Of Concept

PoC Available for CVE-2026-49975

CWE Category CWE-789
Published Date Jun 08, 2026
Modified Date Jul 15, 2026
Exploit Status Available
Score 7.5 CVSS v
Exploit Probability (EPSS)
11.47%

Vulnerability Summary

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.

Impacted Vendors

N
nginx 1
A
apache 1
A
a1webserver 1
B
bughunter 1
F
f5 1

Reference Links

https://httpd.apache.org/security/vulnerabilities_24.html
CVSS v3.1
Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v3.1
Source Entity 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-49975 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/mrx-arafat/CVE-2026-49975-POC
View Code
GitHub https://github.com/fevar54/Proof-of-Concept-POC---CVE-2026-49975-HTTP-2-Bomb-
View Code
GitHub https://github.com/obrige/http2-bomb
View Code
GitHub https://github.com/LSG-PolarBear/CVE-2026-49975
View Code
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Vulnerability data updated via NVD.

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Vulnerability data updated via NVD.

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Vulnerability data updated via NVD.

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Vulnerability data updated via NVD.

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Vulnerability data updated via NVD.

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Vulnerability data updated via NVD.

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Vulnerability data updated via NVD.

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Vulnerability data updated via NVD.

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Vulnerability data updated via NVD.

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Vulnerability data updated via NVD.

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Vulnerability data updated via NVD.

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Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.