# CVE-2018-18925: Path traversal in n/a

> Attackers can achieve remote code execution in Gogs by forging session IDs via path traversal in the file session provider.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/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:** No
- **Published:** 4 Nov 2018
- **Updated:** 5 Aug 2024
- **Also known as:** CVE-2018-1000853, GHSA-59hg-cj84-76w9

## What is CVE-2018-18925?

CVE-2018-18925 is a critical path traversal vulnerability in n/a, published on 4 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Gogs 0.11.66 allows remote code execution because it does not properly validate session IDs, as demonstrated by a ".." session-file forgery in the file session provider in file.go. This is related to session ID handling in the go-macaron/session code for Macaron.

Weakness: CWE-384 (Session Fixation)

## Which versions are affected by CVE-2018-18925?

It affects 1 product.


Products: Gogs Gogs.

## How do I fix CVE-2018-18925?

No fix has been published for CVE-2018-18925 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-18925 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-18925 exists.

Public exploit code:

- Exploitation of CVE-2018-18925 a Remote Code Execution against the Git self hosted tool: Gogs. (github_poc): https://github.com/j4k0m/CVE-2018-18925
- Gogs (Go Git Service) 0.11.66 - Remote Code Execution (nuclei): http/cves/2018/CVE-2018-18925.yaml

## 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-2018-18925 and fix it if it is affected.

What it is: CVE-2018-18925 is a critical path traversal vulnerability in n/a, published on 4 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-18925 exists.

Affected product: n/a. 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-2018-18925/ (Markdown: https://insights.sbomify.com/CVE-2018-18925/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-18925
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-18925
- OSV: https://osv.dev/vulnerability/CVE-2018-18925

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-18925/
Summaries are generated and may contain mistakes; the official description above is the record.