# CVE-2018-15178: Open Redirect

> Remote attackers can redirect users to arbitrary websites via a crafted login parameter, facilitating phishing attacks against Gogs users.

- **Severity:** Medium 6.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 8 Aug 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-cpgw-2wxr-pww3, GO-2022-0822

## What is CVE-2018-15178?

CVE-2018-15178 is a medium-severity vulnerability in n/a, published on 8 Aug 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Open redirect vulnerability in Gogs before 0.12 allows remote attackers to redirect users to arbitrary websites and conduct phishing attacks via an initial /\ substring in the user/login redirect_to parameter, related to the function isValidRedirect in routes/user/auth.go.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2018-15178?

3 open source packages ship an affected version, including gogs.io/gogs. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `gogs.io/gogs` | Go | All versions | 0.12.0 |
| `gogs.io/gogs` | Go | All versions | 0.12.0 |
| `gogs.io/gogs` | Go | All versions | 0.12.0 |

Products: Gogs Gogs.

## How do I fix CVE-2018-15178?

Upgrade gogs.io/gogs to 0.12.0 or later.

## Is CVE-2018-15178 being exploited?

There is no known exploitation of CVE-2018-15178 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2025-8110](https://insights.sbomify.com/CVE-2025-8110/): Gogs Path Traversal (high 8.7, exploited in the wild)
- [CVE-2024-56731](https://insights.sbomify.com/CVE-2024-56731/): Gogs deletion of internal files allows remote command execution (critical 10.0)
- [CVE-2022-1884](https://insights.sbomify.com/CVE-2022-1884/): Remote Command Execution in gogs/gogs (critical 10.0)
- [CVE-2022-1986](https://insights.sbomify.com/CVE-2022-1986/): OS Command Injection in gogs/gogs (critical 10.0)
- [CVE-2022-1992](https://insights.sbomify.com/CVE-2022-1992/): Path Traversal in gogs/gogs (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-15178 and fix it if it is affected.

What it is: CVE-2018-15178 is a medium-severity vulnerability in n/a, published on 8 Aug 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-15178 in the wild and no public exploit code.

Affected packages and fixed versions:
- gogs.io/gogs (Go): affected all versions; fixed in 0.12.0
- gogs.io/gogs (Go): affected all versions; fixed in 0.12.0
- gogs.io/gogs (Go): affected all versions; fixed in 0.12.0

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-2018-15178/ (Markdown: https://insights.sbomify.com/CVE-2018-15178/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-15178
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-15178
- OSV: https://osv.dev/vulnerability/CVE-2018-15178

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-15178/
Summaries are generated and may contain mistakes; the official description above is the record.