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CVE-2026-11979

Опубликовано: 29 июн. 2026
Источник: nvd
CVSS3: 7.8
EPSS Низкий

Описание

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.

Уязвимые конфигурации

Конфигурация 1
cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*
Версия до 2.15.3 (включая)

EPSS

Процентиль: 5%
0.00148
Низкий

7.8 High

CVSS3

Дефекты

CWE-121

Связанные уязвимости

CVSS3: 7.8
ubuntu
около 2 месяцев назад

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.

CVSS3: 4.8
redhat
около 2 месяцев назад

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.

msrc
около 1 месяца назад

Stack-Based Buffer Overflow in libxml2

CVSS3: 7.8
debian
около 2 месяцев назад

libxml2 is vulnerable to multiple stack-based buffer overflows in the ...

CVSS3: 7.8
github
около 2 месяцев назад

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.

EPSS

Процентиль: 5%
0.00148
Низкий

7.8 High

CVSS3

Дефекты

CWE-121