CVE-2025-53537

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2025-53537
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-53537.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-53537
Aliases
  • GHSA-v3qq-h8mh-vph7
Downstream
Published
2025-07-23T20:35:30.824Z
Modified
2026-07-22T04:02:15.892966Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
LibHTP's memory leak with lzma can lead to resource starvation
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-401"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53537.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/oisf/libhtp

Affected ranges

Type
GIT
Repo
https://github.com/oisf/libhtp
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
3ff79ead4d6b995b771d392d7f0697bfc9201d5d
Fixed
9037ea35110a0d97be5cedf8d31fb4cd9a38c7a7
Database specific 
{
    "cpe": "cpe:2.3:a:oisf:libhtp:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.5.51"
        }
    ]
}

Affected versions

0.*
0.5.0
0.5.1
0.5.10
0.5.11
0.5.12
0.5.13
0.5.14
0.5.15
0.5.16
0.5.17
0.5.18
0.5.19
0.5.2
0.5.20
0.5.21
0.5.22
0.5.23
0.5.24
0.5.25
0.5.26
0.5.27
0.5.28
0.5.29
0.5.3
0.5.30
0.5.31
0.5.32
0.5.33
0.5.34
0.5.35
0.5.36
0.5.37
0.5.38
0.5.39
0.5.4
0.5.40
0.5.41
0.5.42
0.5.43
0.5.44
0.5.45
0.5.46
0.5.47
0.5.48
0.5.49
0.5.5
0.5.50
0.5.6
0.5.7
0.5.8
0.5.9

Database specific

vanir_signatures_modified 
"2026-07-22T04:02:15Z"
vanir_signatures 
[
    {
        "signature_type": "Function",
        "target": {
            "file": "htp/htp_decompressors.c",
            "function": "htp_gzip_decompressor_decompress"
        },
        "deprecated": false,
        "source": "https://github.com/oisf/libhtp/commit/9037ea35110a0d97be5cedf8d31fb4cd9a38c7a7",
        "id": "CVE-2025-53537-3b8b509d",
        "signature_version": "v1",
        "digest": {
            "function_hash": "319711909622117197521685987553061998773",
            "length": 5133.0
        }
    },
    {
        "signature_type": "Line",
        "target": {
            "file": "htp/htp_decompressors.c"
        },
        "deprecated": false,
        "source": "https://github.com/oisf/libhtp/commit/9037ea35110a0d97be5cedf8d31fb4cd9a38c7a7",
        "id": "CVE-2025-53537-6b016fe0",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "314874631301158083186356419889154641168",
                "243774011686098355107542034887210145255",
                "319072459999517054393152480369356483307",
                "314663555217702912454495326075304104788"
            ],
            "threshold": 0.9
        }
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-53537.json"