How severe is CVE-2026-3106?

CVE-2026-3106 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-3106 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3106?

CVE-2026-3106 affects Teampass. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3106?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-3106 have an EU (EUVD) identifier?

Yes. CVE-2026-3106 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17345.

When was CVE-2026-3106 published?

CVE-2026-3106 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-3106

CVE-2026-3106 is a medium-severity vulnerability in Teampass with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 9.3
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17345
Weakness: CWE-79
Affected product: Teampass
Published: 2026-03-31
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-3106?: CVE-2026-3106 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-3106 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3106?: CVE-2026-3106 affects Teampass. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3106?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-3106 have an EU (EUVD) identifier?: Yes. CVE-2026-3106 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17345.
When was CVE-2026-3106 published?: CVE-2026-3106 was published on 2026-03-31 and last updated on 2026-06-17.

References

https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-teampass

Affected products (1)

cpe:2.3:a:teampass:teampass:*:*:*:*:*:*:*:*

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