# CVE-2017-0921: Auth bypass in n/a

> GitLab allows unverified password changes, enabling account takeover if a victim's session is compromised.

- **Severity:** High 8.1 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 3 Jul 2018
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-r86w-x85m-w6rj, MINI-j6hv-3f53-55rc, MINI-xffp-wwfc-27f7, UBUNTU-CVE-2017-0921

## What is CVE-2017-0921?

CVE-2017-0921 is a high-severity authentication bypass vulnerability in Gitlab Gitlab, published on 3 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

GitLab Community and Enterprise Editions before 10.1.6, 10.2.6, and 10.3.4 are vulnerable to an unverified password change issue in the PasswordsController component resulting in potential account takeover if a victim's session is compromised.

Weakness: CWE-640 (Weak Password Recovery Mechanism for Forgotten Password)

## Which versions are affected by CVE-2017-0921?

It affects 1 product.


Products: Gitlab Gitlab.

## How do I fix CVE-2017-0921?

Upgrade to a fixed version.

## Is CVE-2017-0921 being exploited?

There is no known exploitation of CVE-2017-0921 in the wild and no public exploit code.

## Other vulnerabilities in Gitlab Gitlab

- [CVE-2026-97229](https://insights.sbomify.com/CVE-2026-97229/): GitLab Community Edition and Enterprise Edition Integer Overflow or Wraparound (critical 10.0, exploited in the wild)
- [CVE-2026-85706](https://insights.sbomify.com/CVE-2026-85706/): GitLab Community Edition and Enterprise Edition Path Traversal (critical 10.0, exploited in the wild)
- [CVE-2023-7028](https://insights.sbomify.com/CVE-2023-7028/): GitLab Community and Enterprise Editions Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2021-22205](https://insights.sbomify.com/CVE-2021-22205/): GitLab Community and Enterprise Editions Remote Code Execution (critical 10.0, exploited in the wild)
- [CVE-2021-39935](https://insights.sbomify.com/CVE-2021-39935/): GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) (medium 6.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-0921 and fix it if it is affected.

What it is: CVE-2017-0921 is a high-severity authentication bypass vulnerability in Gitlab Gitlab, published on 3 Jul 2018. 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-2017-0921 in the wild and no public exploit code.

Affected product: Gitlab Gitlab. 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-2017-0921/ (Markdown: https://insights.sbomify.com/CVE-2017-0921/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-0921
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-0921
- OSV: https://osv.dev/vulnerability/CVE-2017-0921

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-0921/
Summaries are generated and may contain mistakes; the official description above is the record.