# CVE-2020-12477: Incorrect Authorization in TeamPass

> Attackers with valid API tokens can bypass IP whitelist restrictions in TeamPass by spoofing the X-Forwarded-For header.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Apr 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-fv48-hjhp-94c7

## What is CVE-2020-12477?

CVE-2020-12477 is a high-severity vulnerability in Teampass Teampass, published on 29 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The REST API functions in TeamPass 2.1.27.36 allow any user with a valid API token to bypass IP address whitelist restrictions via an X-Forwarded-For client HTTP header to the getIp function.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2020-12477?

2 open source packages ship an affected version, including nilsteampassnet/teampass. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `nilsteampassnet/teampass` | Packagist | All versions to 2.1.27.36 | None |
| `nilsteampassnet/teampass` | Packagist | All versions to 2.1.27.36 | None |

Products: Teampass Teampass.

## How do I fix CVE-2020-12477?

No fix has been published for CVE-2020-12477 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-12477 being exploited?

There is no known exploitation of CVE-2020-12477 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-2026-3106](https://insights.sbomify.com/CVE-2026-3106/): Multiple vulnerabilities in Teampass (critical 9.3)
- [CVE-2026-3107](https://insights.sbomify.com/CVE-2026-3107/): Multiple vulnerabilities in Teampass (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-12477 and fix it if it is affected.

What it is: CVE-2020-12477 is a high-severity vulnerability in Teampass Teampass, published on 29 Apr 2020. 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-2020-12477 in the wild and no public exploit code.

Affected packages and fixed versions:
- nilsteampassnet/teampass (Packagist): affected all versions up to 2.1.27.36; no fix listed
- nilsteampassnet/teampass (Packagist): affected all versions up to 2.1.27.36; no fix listed

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-2020-12477/ (Markdown: https://insights.sbomify.com/CVE-2020-12477/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-12477
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-12477
- OSV: https://osv.dev/vulnerability/CVE-2020-12477

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-12477/
Summaries are generated and may contain mistakes; the official description above is the record.