CVE-2026-35460

Papra has an HTML Injection in Transactional Emails via Unescaped User Display Name

State: Published
Severity: 4.3 Medium
Published: Apr 7, 2026
Updated: Apr 7, 2026
Reserved: Apr 2, 2026

Description

Papra is a minimalistic document management and archiving platform. Prior to 26.4.0, transactional email templates in Papra interpolate user.name directly into HTML without escaping or sanitization. An attacker who registers with a display name containing HTML tags will have those tags injected into the verification and password reset email bodies. Since emails are sent from the legitimate domain (e.g: auth@mail.papra.app), this enables convincing phishing attacks that appear to originate from official Papra notifications. This vulnerability is fixed in 26.4.0.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N	GitHub_M

Weaknesses

CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
paprapapra-hq	< 26.4.0Affected

References

https://github.com/papra-hq/papra/security/advisories/GHSA-6f8x-2rc9-vgh4

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