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CVE-2026-42197— RELATE Vulnerable to Stored XSS via Unprivileged User Profile

Quick assessment

Affected
inducer relate
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

RELATE是Andreas Klöckner个人开发者的一个基于网络的课件包。 RELATE存在跨站脚本漏洞，该漏洞源于ParticipationAdmin中的get_user方法使用mark_safe渲染用户控制的输入，绕过Django的HTML转义，可能导致存储型跨站脚本攻击，造成管理员账户接管。

CVSS 8.7 · High EPSS 0.31% · P24

Affected Version Matrix 1

VendorProduct Version RangeStatus
inducer relate < 555f0efb1c5bd7531c07cd73724d7e566a81f620 affected
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I. Basic Information for CVE-2026-42197

Vulnerability Information
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Vulnerability Title
RELATE Vulnerable to Stored XSS via Unprivileged User Profile
Source: CVE Program / CVE List V5
Vulnerability Description
RELATE is a web-based courseware package. Versions prior to commit 555f0efb1c5bd7531c07cd73724d7e566a81f620 have a stored cross-site scripting vulnerability that allows any enrolled student to execute arbitrary JavaScript in an administrator's browser session, potentially leading to full admin account takeover. The `get_user()` method in `ParticipationAdmin` renders user-controlled input using `mark_safe` combined with Python's % string formatting. This bypasses Django\'s automatic HTML escaping entirely. The value returned by `get_full_name` is derived directly from the `first_name` and `last_name` fields of the User model. These fields are freely editable by any authenticated user through the profile page (`/profile/`) with no sanitization applied. When an admin views the Participation list in the Django admin panel, the unsanitized value is rendered directly into the HTML response, causing the injected script to execute in the admin's browser. Commit 555f0efb1c5bd7531c07cd73724d7e566a81f620 fixes the 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: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
RELATE 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RELATE是Andreas Klöckner个人开发者的一个基于网络的课件包。 RELATE存在跨站脚本漏洞，该漏洞源于ParticipationAdmin中的get_user方法使用mark_safe渲染用户控制的输入，绕过Django的HTML转义，可能导致存储型跨站脚本攻击，造成管理员账户接管。
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
inducer relate < 555f0efb1c5bd7531c07cd73724d7e566a81f620 -

II. Public POCs for CVE-2026-42197

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7092 chars
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III. Intelligence Information for CVE-2026-42197

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Patches & Fixes for CVE-2026-42197 (1)

Vendor Advisories for CVE-2026-42197 (1)

IV. Related Vulnerabilities

Same product: relate
Same vendor: inducer
Same weakness: CWE-79

V. Comments for CVE-2026-42197

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