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CVE-2026-66046

Опубликовано: 19 авг. 2026
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS3: 7.5

Описание

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

РелизСтатусПримечание
devel

not-affected

uses system expat
esm-infra-legacy/trusty

not-affected

uses system expat
esm-infra-legacy/xenial

not-affected

uses system expat
esm-infra/bionic

not-affected

uses system expat
esm-infra/focal

not-affected

uses system expat
jammy

not-affected

uses system expat
noble

not-affected

uses system expat
resolute

not-affected

uses system expat
upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

not-affected

uses system expat
esm-infra-legacy/trusty

not-affected

uses system expat
esm-infra-legacy/xenial

not-affected

uses system expat
esm-infra/bionic

not-affected

uses system expat
esm-infra/focal

not-affected

uses system expat
jammy

not-affected

uses system expat
noble

not-affected

uses system expat
resolute

not-affected

uses system expat
upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

DNE

esm-apps-legacy/xenial

needs-triage

jammy

DNE

noble

DNE

resolute

DNE

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

DNE

esm-apps-legacy/xenial

needs-triage

jammy

DNE

noble

DNE

resolute

DNE

upstream

needs-triage

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РелизСтатусПримечание
devel

needs-triage

esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

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esm-apps/focal

needs-triage

esm-apps/jammy

needs-triage

esm-apps/noble

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esm-apps/resolute

needs-triage

jammy

needs-triage

noble

needs-triage

resolute

needs-triage

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РелизСтатусПримечание
devel

not-affected

uses system expat
esm-infra-legacy/xenial

not-affected

uses system expat
esm-infra/bionic

not-affected

uses system expat
esm-infra/focal

not-affected

uses system expat
jammy

not-affected

uses system expat
noble

not-affected

uses system expat
resolute

not-affected

uses system expat
upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

not-affected

uses system expat
esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

not-affected

uses system expat
esm-apps/jammy

not-affected

uses system expat
esm-apps/noble

not-affected

uses system expat
esm-apps/resolute

not-affected

uses system expat
esm-infra-legacy/trusty

needs-triage

jammy

not-affected

uses system expat
noble

not-affected

uses system expat

Показывать по

РелизСтатусПримечание
devel

needs-triage

esm-infra-legacy/trusty

needs-triage

esm-infra-legacy/xenial

needs-triage

esm-infra/bionic

needs-triage

esm-infra/focal

needs-triage

jammy

needs-triage

noble

needs-triage

resolute

needs-triage

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

not-affected

code not present
jammy

not-affected

code not present
noble

not-affected

code not present
resolute

not-affected

code not present
upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

not-affected

uses system expat
esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

not-affected

uses system expat
esm-apps/jammy

not-affected

uses system expat
esm-apps/noble

not-affected

uses system expat
esm-apps/resolute

not-affected

uses system expat
esm-infra-legacy/trusty

not-affected

uses system expat
jammy

not-affected

uses system expat
noble

not-affected

uses system expat

Показывать по

РелизСтатусПримечание
devel

not-affected

uses system expat
esm-infra-legacy/xenial

not-affected

uses system expat
esm-infra/bionic

not-affected

uses system expat
esm-infra/focal

not-affected

uses system expat
jammy

not-affected

uses system expat
noble

not-affected

uses system expat
resolute

not-affected

uses system expat
upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

DNE

esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

needs-triage

esm-apps/jammy

needs-triage

jammy

needs-triage

noble

DNE

resolute

DNE

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

DNE

esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

needs-triage

esm-apps/jammy

needs-triage

esm-apps/noble

needs-triage

jammy

needs-triage

noble

needs-triage

resolute

DNE

upstream

needs-triage

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РелизСтатусПримечание
devel

ignored

esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

ignored

esm-apps/jammy

ignored

esm-apps/noble

ignored

esm-apps/resolute

ignored

jammy

ignored

noble

ignored

resolute

ignored

Показывать по

РелизСтатусПримечание
devel

DNE

esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

jammy

DNE

noble

DNE

resolute

DNE

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

needs-triage

esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

needs-triage

esm-apps/jammy

needs-triage

esm-apps/noble

needs-triage

esm-apps/resolute

needs-triage

jammy

needs-triage

noble

needs-triage

resolute

needs-triage

Показывать по

РелизСтатусПримечание
devel

needs-triage

esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

needs-triage

esm-apps/jammy

needs-triage

esm-apps/noble

needs-triage

esm-apps/resolute

needs-triage

jammy

needs-triage

noble

needs-triage

resolute

needs-triage

Показывать по

РелизСтатусПримечание
devel

not-affected

code-not-compiled
esm-apps/resolute

not-affected

code-not-compiled
esm-infra-legacy/xenial

not-affected

code-not-compiled
esm-infra/bionic

not-affected

code-not-compiled
esm-infra/focal

not-affected

code-not-compiled
jammy

not-affected

code-not-compiled
noble

not-affected

code-not-compiled
resolute

not-affected

code-not-compiled
upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

not-affected

code not present
jammy

not-affected

uses system expat
noble

not-affected

code not present
resolute

not-affected

code not present
upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

DNE

esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

esm-infra-legacy/trusty

needs-triage

jammy

DNE

noble

DNE

resolute

DNE

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

DNE

esm-apps-legacy/xenial

needs-triage

esm-infra-legacy/trusty

needs-triage

jammy

DNE

noble

DNE

resolute

DNE

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

needs-triage

esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

needs-triage

esm-apps/jammy

needs-triage

esm-apps/noble

needs-triage

esm-apps/resolute

needs-triage

jammy

needs-triage

noble

needs-triage

resolute

needs-triage

Показывать по

РелизСтатусПримечание
devel

needs-triage

esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

needs-triage

esm-apps/jammy

needs-triage

esm-apps/noble

needs-triage

esm-apps/resolute

needs-triage

esm-infra-legacy/trusty

needs-triage

jammy

needs-triage

noble

needs-triage

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Ссылки на источники

EPSS

Процентиль: 32%
0.00391
Низкий

7.5 High

CVSS3

Связанные уязвимости

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.

msrc
10 дней назад

Expat Denial of Service via storeAtts() Quadratic Complexity

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

Уязвимость CVE-2026-66046