# CVE-2026-41426

> Vulnerability · severity: **MEDIUM** (CVSS 6.1).

## 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.

## Key facts

- **CVE ID:** CVE-2026-41426
- **Published:** 2026-04-24
- **CVSS severity:** MEDIUM
- **CVSS base score:** 6.1
- **CWE codes:** CWE-79, CWE-116

## Affected products

- `pretalx:pretalx`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-41426

## Citation

> AI Analytics. CVE-2026-41426. Retrieved 2026-07-23 from https://api.ai-analytics.org/cve/CVE-2026-41426. Derived from NIST NVD. Licensed CC0.

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