high7.5
CVE-2025-53537
LibHTP is a security-aware parser for the HTTP protocol and its related bits and pieces.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Oisf | Libhtp | before 0.5.51 |