CVE-2025-53537

LibHTP is a security-aware parser for the HTTP protocol and its related bits and pieces. In versions 0.5.50 and below, there is a traffic-induced memory leak that can starve the process of memory, leading to loss of visibility. To workaround this issue, set `suricata.yaml app-layer.protocols.http.libhtp.default-config.lzma-enabled` to false. This issue is fixed in version 0.5.51.

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://github.com/OISF/libhtp/commit/9037ea35110a0d97be5cedf8d31fb4cd9a38c7a7	Patch
https://github.com/OISF/libhtp/security/advisories/GHSA-v3qq-h8mh-vph7	Vendor Advisory Mitigation

Configurations

Configuration 1 (hide)

cpe:2.3:a:oisf:libhtp:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-07-23 21:15

Updated : 2025-08-05 15:48

NVD link : CVE-2025-53537

Mitre link : CVE-2025-53537

CVE.ORG link : CVE-2025-53537

JSON object : View

Products Affected

oisf

libhtp

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

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