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CVE-2021-25978— Apostrophe - XSS

Quick assessment

Affected
Apostrophe Apostrophe
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.

Apostrophe是美国Apostrophe公司的一个使用 Node.js 构建的全功能开源 Cms。旨在通过在全栈 Js 环境中结合上下文编辑和无头架构来增强组织的能力。 Apostrophe CMS 存在跨站脚本漏洞，该漏洞源于从2.63.0到3.3.1之间的Apostrophe CMS版本容易受到存储XSS的攻击。攻击者可利用该漏洞将包含恶意JavaScript的SVG文件上传到Images模块，一旦查看，就会触发XSS。

CVSS 5.4 · Medium EPSS 0.48% · P40
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I. Basic Information for CVE-2021-25978

Vulnerability Information
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Vulnerability Title
Apostrophe - XSS
Source: CVE Program / CVE List V5
Vulnerability Description
Apostrophe CMS versions between 2.63.0 to 3.3.1 are vulnerable to Stored XSS where an editor uploads an SVG file that contains malicious JavaScript onto the Images module, which triggers XSS once viewed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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
Apostrophe 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apostrophe是美国Apostrophe公司的一个使用 Node.js 构建的全功能开源 Cms。旨在通过在全栈 Js 环境中结合上下文编辑和无头架构来增强组织的能力。 Apostrophe CMS 存在跨站脚本漏洞，该漏洞源于从2.63.0到3.3.1之间的Apostrophe CMS版本容易受到存储XSS的攻击。攻击者可利用该漏洞将包含恶意JavaScript的SVG文件上传到Images模块，一旦查看，就会触发XSS。
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
Apostrophe Apostrophe unspecified ~ 3.3.1 -

II. Public POCs for CVE-2021-25978

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III. Intelligence Information for CVE-2021-25978

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Patches & Fixes for CVE-2021-25978 (1)

IV. Related Vulnerabilities

Same product: Apostrophe
Same vendor: Apostrophe
Same weakness: CWE-79

V. Comments for CVE-2021-25978

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