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GHSA-22g5-r2x5-97cx

Опубликовано: 07 июл. 2026
Источник: github
Github: Прошло ревью
CVSS4: 5.3
CVSS3: 6.1

Описание

showdown allows stored cross-site scripting through table header ID injection

showdown contains a stored cross-site scripting vulnerability in the parseHeaders function of src/subParsers/makehtml/tables.js that fails to properly escape table header ID attributes. Attackers can inject arbitrary HTML and script-executing SVG elements through double-quote characters in markdown table headers, achieving stored XSS when untrusted markdown is rendered with the default github flavor configuration.

Пакеты

Наименование

showdown

npm
Затронутые версииВерсия исправления

<= 2.1.0

Отсутствует

EPSS

Процентиль: 25%
0.00338
Низкий

5.3 Medium

CVSS4

6.1 Medium

CVSS3

Дефекты

CWE-79

Связанные уязвимости

CVSS3: 6.1
redhat
3 месяца назад

showdown contains a stored cross-site scripting vulnerability in the parseHeaders function of src/subParsers/makehtml/tables.js that fails to properly escape table header ID attributes. Attackers can inject arbitrary HTML and script-executing SVG elements through double-quote characters in markdown table headers, achieving stored XSS when untrusted markdown is rendered with the default github flavor configuration.

CVSS3: 6.1
nvd
3 месяца назад

showdown contains a stored cross-site scripting vulnerability in the parseHeaders function of src/subParsers/makehtml/tables.js that fails to properly escape table header ID attributes. Attackers can inject arbitrary HTML and script-executing SVG elements through double-quote characters in markdown table headers, achieving stored XSS when untrusted markdown is rendered with the default github flavor configuration.

EPSS

Процентиль: 25%
0.00338
Низкий

5.3 Medium

CVSS4

6.1 Medium

CVSS3

Дефекты

CWE-79