CVE-2025-53537
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductOisf Libhtp
PublishedJul 23, 2025
First seenJul 23, 2025
Weakness typeCWE-401CWE-401
How to fix
Update
- oisf libhtp0.5.51 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| oisf libhtp | v < 0.5.51 | 0.5.51 |
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