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CVE-2022-41938— Cross site scripting vulnerability with discussion titles in flarum

Quick assessment

Affected
flarum framework
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.

Flarum是Flarum社区的一套开源的论坛系统。 Flarum 1.5.0版本至1.6.1版本存在跨站脚本漏洞。攻击者利用该漏洞通过标题输入注入恶意HTML。

CVSS 9.0 · Critical EPSS 0.68% · P49
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I. Basic Information for CVE-2022-41938

Vulnerability Information
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Vulnerability Title
Cross site scripting vulnerability with discussion titles in flarum
Source: CVE Program / CVE List V5
Vulnerability Description
Flarum is an open source discussion platform. Flarum's page title system allowed for page titles to be converted into HTML DOM nodes when pages were rendered. The change was made after `v1.5` and was not noticed. This allowed an attacker to inject malicious HTML markup using a discussion title input, either by creating a new discussion or renaming one. The XSS attack occurs after a visitor opens the relevant discussion page. All communities running Flarum from `v1.5.0` to `v1.6.1` are impacted. The vulnerability has been fixed and published as flarum/core `v1.6.2`. All communities running Flarum from `v1.5.0` to `v1.6.1` have to upgrade as soon as possible to v1.6.2. There are no known workarounds for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
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
Flarum 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flarum是Flarum社区的一套开源的论坛系统。 Flarum 1.5.0版本至1.6.1版本存在跨站脚本漏洞。攻击者利用该漏洞通过标题输入注入恶意HTML。
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
flarum framework >= 1.5.0, < 1.6.2 -

II. Public POCs for CVE-2022-41938

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III. Intelligence Information for CVE-2022-41938

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Patches & Fixes for CVE-2022-41938 (1)

Vendor Advisories for CVE-2022-41938 (1)

Other References for CVE-2022-41938 (1)

IV. Related Vulnerabilities

Same product: framework
Same vendor: flarum
Same weakness: CWE-79

V. Comments for CVE-2022-41938

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