Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2026-41426— pretalx: Email injection via unescaped user-controlled placeholders in pretalx mail templates

CVSS 6.1 · Medium EPSS 0.03% · P10
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-41426

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
pretalx: Email injection via unescaped user-controlled placeholders in pretalx mail templates
Source: NVD (National Vulnerability Database)
Vulnerability Description
pretalx is a conference planning tool. Prior to 2026.1.0, an unauthenticated attacker can send arbitrary HTML-rendered emails from a pretalx instance's configured sender address by embedding malformed HTML or markdown link syntax in a user-controlled template placeholder such as the account display name. The most direct vector is the password-reset flow: the attacker registers an account with a malicious name, enters the victim's email address, and triggers a password reset. The resulting email is delivered from the event's legitimate sender address and passes SPF/DKIM/DMARC validation, making it a ready-made phishing vector. This vulnerability is fixed in 2026.1.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
pretalx 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pretalx是pretalx开源的一个会议规划工具。专注于为组织者、演讲者、评审员和与会者提供最佳体验。 pretalx 2026.1.0之前版本存在跨站脚本漏洞，该漏洞源于用户控制的模板占位符可嵌入恶意HTML或markdown链接，可能导致未认证攻击者发送任意HTML渲染邮件。
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

VendorProductAffected VersionsCPESubscribe
pretalxpretalx < 2026.1.0 -

II. Public POCs for CVE-2026-41426

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-41426

请登录查看更多情报信息。

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-41426

No comments yet

Leave a comment