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GHSA-r6r4-8m79-7vvv

Опубликовано: 20 авг. 2026
Источник: github
Github: Не прошло ревью
CVSS4: 8.7
CVSS3: 7.5

Описание

Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption by processing XML with external entity parsers created via XML_ExternalEntityParserCreate. A struct size mismatch between ELEMENT_TYPE members causes storeAtts to read the attIndex member past allocated memory boundaries, resulting in failure to normalize whitespace in non-CDATA attributes or a wild pointer dereference causing a segfault. This vulnerability was introduced by the fix for CVE-2026-66046.

Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption by processing XML with external entity parsers created via XML_ExternalEntityParserCreate. A struct size mismatch between ELEMENT_TYPE members causes storeAtts to read the attIndex member past allocated memory boundaries, resulting in failure to normalize whitespace in non-CDATA attributes or a wild pointer dereference causing a segfault. This vulnerability was introduced by the fix for CVE-2026-66046.

EPSS

Процентиль: 26%
0.00335
Низкий

8.7 High

CVSS4

7.5 High

CVSS3

Дефекты

CWE-125

Связанные уязвимости

CVSS3: 7.5
ubuntu
7 дней назад

(Expat through 2.8.3 contains an out-of-bounds read vulnerability that ...)

CVSS3: 7.5
nvd
7 дней назад

Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption by processing XML with external entity parsers created via XML_ExternalEntityParserCreate. A struct size mismatch between ELEMENT_TYPE members causes storeAtts to read the attIndex member past allocated memory boundaries, resulting in failure to normalize whitespace in non-CDATA attributes or a wild pointer dereference causing a segfault. This vulnerability was introduced by the fix for CVE-2026-66046.

CVSS3: 7.5
debian
7 дней назад

Expat through 2.8.3 contains an out-of-bounds read vulnerability that ...

EPSS

Процентиль: 26%
0.00335
Низкий

8.7 High

CVSS4

7.5 High

CVSS3

Дефекты

CWE-125