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CVE-2026-66046

Опубликовано: 23 авг. 2026
Источник: msrc
CVSS3: 7.5
EPSS Низкий

Описание

Expat Denial of Service via storeAtts() Quadratic Complexity

EPSS

Процентиль: 32%
0.00391
Низкий

7.5 High

CVSS3

Связанные уязвимости

CVSS3: 7.5
ubuntu
14 дней назад

(Expat through 2.8.3 contains a denial of service vulnerability caused ...)

CVSS3: 7.5
nvd
14 дней назад

Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function in xmlparse.c, where processing N specified attributes with non-normalized values triggers an O(N^2) linear scan of elementType->defaultAtts to determine CDATA status. A remote unauthenticated attacker can supply a single well-formed XML document of a few megabytes to an application parsing untrusted XML to cause excessive CPU consumption, resulting in denial of service without requiring authentication, external entity resolution, or non-default parser options.

CVSS3: 7.5
debian
14 дней назад

Expat through 2.8.3 contains a denial of service vulnerability caused ...

CVSS3: 7.5
github
14 дней назад

Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function in xmlparse.c, where processing N specified attributes with non-normalized values triggers an O(N^2) linear scan of elementType->defaultAtts to determine CDATA status. A remote unauthenticated attacker can supply a single well-formed XML document of a few megabytes to an application parsing untrusted XML to cause excessive CPU consumption, resulting in denial of service without requiring authentication, external entity resolution, or non-default parser options.

CVSS3: 7.5
fstec
15 дней назад

Уязвимость функции storeAtts() библиотеки Expat, позволяющая нарушителю вызвать отказ в обслуживании

EPSS

Процентиль: 32%
0.00391
Низкий

7.5 High

CVSS3