What is CVE-2026-3106?

CVE-2026-3106 is a medium-severity vulnerability in Teampass, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-03-31.

How severe is CVE-2026-3106?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Teampass

CVE-2026-3106

Blind Cross-Site Scripting (XSS) in Teampass, versions prior to 3.1.5.16, within the password manager login functionality in the 'contraseña' parameter of the login form 'redacted/index.php'. During failed authentication attempts, the application does not properly clean or encode the information entered by the user in the username field. As a result, arbitrary JavaScript code is automatically executed in the administrator's browser when viewing failed login entries, resulting in a blind XSS condition.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (5.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Teampass — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve-coordination@incibe.es (Third Party Advisory, patch)

Frequently asked questions

What is CVE-2026-3106?: CVE-2026-3106 is a medium-severity vulnerability in Teampass, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-03-31.
How severe is CVE-2026-3106?: Medium severity. CVSS v3 base score is 5.4 out of 10.