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Description

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.

PUBLISHED Reserved 2026-02-24 | Published 2026-03-31 | Updated 2026-03-31 | Assigner INCIBE




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')

Product status

Default status
unaffected

Any version
affected

Credits

Julen Garrido Estévez (B3xal) finder

References

www.incibe.es/...ces/aviso/multiple-vulnerabilities-teampass patch

cve.org (CVE-2026-3106)

nvd.nist.gov (CVE-2026-3106)

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