CVE-2018-20303 Gogs Directory Traversal

What is CVE-2018-20303?

CVE-2018-20303 is a high-severity path traversal vulnerability in n/a, published on 20 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In pkg/tool/path.go in Gogs before 0.11.82.1218, a directory traversal in the file-upload functionality can allow an attacker to create a file under data/sessions on the server, a similar issue to CVE-2018-18925.

Weakness: CWE-22

Which versions are affected by CVE-2018-20303?

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

Products include Gogs Gogs.

How do I fix CVE-2018-20303?

Upgrade gogs.io/gogs to 0.11.80-0.20181218063808-ff93d9dbda5c or later.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2018-20303 being exploited?

There is no known exploitation of CVE-2018-20303 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2025-8110 Gogs Path Traversal Exploited High 8.7
• CVE-2024-56731 Gogs deletion of internal files allows remote command execution Critical 10.0
• CVE-2022-1884 Remote Command Execution in gogs/gogs Critical 10.0
• CVE-2022-1986 OS Command Injection in gogs/gogs Critical 10.0
• CVE-2022-1992 Path Traversal in gogs/gogs Critical 10.0

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-9hxg-w7qf-hh93.