# CVE-2026-3106: Multiple vulnerabilities in Teampass

> Blind XSS in Teampass allows attackers to execute arbitrary JavaScript in an administrator's browser via the login form, potentially leading to account takeover.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 31 Mar 2026
- **Updated:** 31 Mar 2026
- **Also known as:** GHSA-v5c3-292h-hqp3

## What is CVE-2026-3106?

CVE-2026-3106 is a critical cross-site scripting vulnerability in Teampass Teampass, published on 31 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-3106?

It affects 1 product.


Products: Teampass Teampass.

## How do I fix CVE-2026-3106?

No fix has been published for CVE-2026-3106 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-3106 being exploited?

There is no known exploitation of CVE-2026-3106 in the wild and no public exploit code.

## Other vulnerabilities in Teampass Teampass

- [CVE-2019-1000001](https://insights.sbomify.com/CVE-2019-1000001/): TeamPass Storing Passwords in a Recoverable Format vulnerability (critical 9.8)
- [CVE-2017-9436](https://insights.sbomify.com/CVE-2017-9436/): TeamPass SQL injection in users.queries.php (critical 9.8)
- [CVE-2015-7564](https://insights.sbomify.com/CVE-2015-7564/): TeamPass vulnerable to SQL Injection (critical 9.8)
- [CVE-2026-3107](https://insights.sbomify.com/CVE-2026-3107/): Multiple vulnerabilities in Teampass (critical 9.3)
- [CVE-2023-3551](https://insights.sbomify.com/CVE-2023-3551/): Code Injection in nilsteampassnet/teampass (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-3106 and fix it if it is affected.

What it is: CVE-2026-3106 is a critical cross-site scripting vulnerability in Teampass Teampass, published on 31 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-3106 in the wild and no public exploit code.

Affected product: Teampass Teampass. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-3106/ (Markdown: https://insights.sbomify.com/CVE-2026-3106/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-3106
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-3106
- OSV: https://osv.dev/vulnerability/CVE-2026-3106

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-3106/
Summaries are generated and may contain mistakes; the official description above is the record.