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CVE-2023-36823— Sanitize vulnerable to Cross-site Scripting via insufficient neutralization of `style` element content

Quick assessment

Affected
rgrove sanitize
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sanitize是美国Ryan Grove个人开发者的一款HTML和CSS清理器，它支持从字符串中删除HTML和CSS等。 Sanitize 3.0.0至6.0.2之前版本存在跨站脚本漏洞，该漏洞源于存在跨站脚本（XSS）漏洞，允许攻击者通过Sanitize配置嵌入任意HTML和CSS。

CVSS 7.1 · High EPSS 0.71% · P53
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I. Basic Information for CVE-2023-36823

Vulnerability Information
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Vulnerability Title
Sanitize vulnerable to Cross-site Scripting via insufficient neutralization of `style` element content
Source: CVE Program / CVE List V5
Vulnerability Description
Sanitize is an allowlist-based HTML and CSS sanitizer. Using carefully crafted input, an attacker may be able to sneak arbitrary HTML and CSS through Sanitize starting with version 3.0.0 and prior to version 6.0.2 when Sanitize is configured to use the built-in "relaxed" config or when using a custom config that allows `style` elements and one or more CSS at-rules. This could result in cross-site scripting or other undesired behavior when the malicious HTML and CSS are rendered in a browser. Sanitize 6.0.2 performs additional escaping of CSS in `style` element content, which fixes this issue. Users who are unable to upgrade can prevent this issue by using a Sanitize config that doesn't allow `style` elements, using a Sanitize config that doesn't allow CSS at-rules, or by manually escaping the character sequence `</` as `<\/` in `style` element content.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Sanitize 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sanitize是美国Ryan Grove个人开发者的一款HTML和CSS清理器，它支持从字符串中删除HTML和CSS等。 Sanitize 3.0.0至6.0.2之前版本存在跨站脚本漏洞，该漏洞源于存在跨站脚本（XSS）漏洞，允许攻击者通过Sanitize配置嵌入任意HTML和CSS。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
rgrove sanitize >= 3.0.0, < 6.0.2 -

II. Public POCs for CVE-2023-36823

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III. Intelligence Information for CVE-2023-36823

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Patches & Fixes for CVE-2023-36823 (1)

Vendor Advisories for CVE-2023-36823 (1)

Mailing List Discussions for CVE-2023-36823 (1)

Other References for CVE-2023-36823 (1)

IV. Related Vulnerabilities

Same product: sanitize
Same vendor: rgrove
Same weakness: CWE-79

V. Comments for CVE-2023-36823

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