Vulnerability · Published Apr 7, 2026 · Assigned by GitHub_M
CVE-2026-35460Papra has an HTML Injection in Transactional Emails via Unescaped User Display Name
Medium 4.3
In plain English
A medium-severity cross-site scripting in papra from papra-hq. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Official 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.
Affected products (as reported)
Weakness: CWE-80, CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
References
- https://github.com/papra-hq/papra/security/advisories/GHSA-6f8x-2rc9-vgh4 x_refsource_CONFIRM