CVE-2018-17031 Gogs XSS Vulnerability

What is CVE-2018-17031?

CVE-2018-17031 is a medium-severity cross-site scripting vulnerability in n/a, published on 14 Sep 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

In Gogs 0.11.53, an attacker can use a crafted .eml file to trigger MIME type sniffing, which leads to XSS, as demonstrated by Internet Explorer, because an "X-Content-Type-Options: nosniff" header is not sent.

Weakness: CWE-79

Which versions are affected by CVE-2018-17031?

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

Products include Gogs Gogs.

How do I fix CVE-2018-17031?

Upgrade gogs.io/gogs to 0.12.0 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2018-17031 being exploited?

There is no known exploitation of CVE-2018-17031 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-px5r-fqj6-r2f8, GO-2023-1972.