CVE-2026-52747

Katalog CVE

CVSS 8.6 · High EPSS 0,48%

Kerentanan Incorrect Behavior Order: Validate Before Canonicalize pada owasp modsecurity. Skor CVSS 3.1 8.6 (High) menurut NVD.

Deskripsi (NVD)

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Prior to 3.0.16, the multipart/form-data request body parser in libmodsecurity silently removes embedded line breaks from non-file form-field values before exporting them to ARGS and ARGS_POST because src/request_body_processor/multipart.cc overwrites reserved bytes in m_reserve instead of appending the current buffer. This creates a parser differential between ModSecurity and backend applications that preserve line breaks in form fields, allowing rules that inspect ARGS or ARGS_POST to miss payloads whose dangerous syntax depends on a line break. This issue is fixed in version 3.0.16.

Rincian

Terbit di NVD

10 Juli 2026

Terakhir diubah

14 Juli 2026

Status NVD

Analyzed

CVSS 3.1

8.6 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-180: Incorrect Behavior Order: Validate Before Canonicalize

EPSS (30 hari)

0,48% peluang dieksploitasi; lebih tinggi dari 39,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-rcw9-2f5r-7p88 exploit · mitigasi · advisory vendor
• https://github.com/owasp-modsecurity/ModSecurity/commit/875504c2758169c41be1ad2f0cc64d896b7815d7 patch
• https://github.com/owasp-modsecurity/ModSecurity/releases/tag/v3.0.16 product · release notes