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CVE-2024-51492— Zusam vulnerable to stored XSS, allowing token theft via crafted SVG

Quick assessment

Affected
zusam zusam
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.

Zusam是Zusam开源的一种免费开源的方式。用于举办私人论坛。 Zusam 0.5.6之前版本存在跨站脚本漏洞，该漏洞源于特别制作的SVG文件作为图像上传到服务时，允许不受限制的执行脚本。

CVSS 8.8 · High EPSS 0.47% · P38
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I. Basic Information for CVE-2024-51492

Vulnerability Information
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Vulnerability Title
Zusam vulnerable to stored XSS, allowing token theft via crafted SVG
Source: CVE Program / CVE List V5
Vulnerability Description
Zusam is a free and open-source way to self-host private forums. Prior to version 0.5.6, specially crafted SVG files uploaded to the service as images allow for unrestricted script execution on (raw) image load. With certain payloads, theft of the target user’s long-lived session token is possible. Note that Zusam, at the time of writing, uses a user’s static API key as a long-lived session token, and these terms can be used interchangeably on the platform. This session token/API key remains valid indefinitely, so long as the user doesn’t expressly request a new one via their Settings page. Version 0.5.6 fixes the cross-site scripting vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/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
Zusam 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zusam是Zusam开源的一种免费开源的方式。用于举办私人论坛。 Zusam 0.5.6之前版本存在跨站脚本漏洞，该漏洞源于特别制作的SVG文件作为图像上传到服务时，允许不受限制的执行脚本。
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
zusam zusam < 0.5.6 -

II. Public POCs for CVE-2024-51492

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III. Intelligence Information for CVE-2024-51492

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Patches & Fixes for CVE-2024-51492 (1)

Vendor Advisories for CVE-2024-51492 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2024-51492

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