CVE-2026-19773

Katalog CVE

CVSS 9.8 · Critical EPSS 0,65%

Kerentanan Out-of-bounds Write. Skor CVSS 3.0 9.8 (Critical) menurut trendmicro.com.

Deskripsi (NVD)

libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of HTTP/2 HPACK path header. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-31036.

Rincian

Terbit di NVD

15 September 2026

Terakhir diubah

18 September 2026

Status NVD

Awaiting Analysis

CVSS 3.0

9.8 (Critical), sumber trendmicro.com
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-787: Out-of-bounds Write

EPSS (30 hari)

0,65% peluang dieksploitasi; lebih tinggi dari 49,5% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/warmcat/libwebsockets/commit/824151862f37bc72f46d9a3e01d5b9408d313a0b
• https://www.zerodayinitiative.com/advisories/ZDI-26-590/