CVE-2026-11979

Katalog CVE

CVSS 7.8 · High EPSS 0,15%

Kerentanan Stack-based Buffer Overflow pada xmlsoft libxml2. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

libxml2 is vulnerable to multiple stack-based buffer overflows in the xmlcatalog utility when running in --shell mode. The usershell() function processes user input using fixed-size stack buffers without proper bounds checking. By supplying an overly long input line, an attacker can overflow internal buffers (command, arg, and argv) during input parsing. This results in memory corruption within the stack frame. Successful exploitation may cause a crash or potentially allow arbitrary code execution in the context of the xmlcatalog process. This issue has been fixed in the commit c2e233fc. NOTE: The maintainers of this project did not agree that this issue is a vulnerability and considered it a bug.

Rincian

Terbit di NVD

29 Juni 2026

Terakhir diubah

30 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-121: Stack-based Buffer Overflow

EPSS (30 hari)

0,15% peluang dieksploitasi; lebih tinggi dari 3,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://gitlab.gnome.org/GNOME/libxml2/-/commit/c2e233fc1b341685fc99621b2768b503f777a72e patch
• https://cert.pl/en/posts/2026/06/CVE-2026-11979 advisory pihak ketiga