CVE-2026-26022 Gogs: Stored XSS via data URI in issue comments
Authenticated users can inject arbitrary JavaScript via data URIs in issue comments, potentially leading to code execution or account takeover.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-26022?
CVE-2026-26022 is a high-severity cross-site scripting vulnerability in gogs, published on 5 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Gogs is an open source self-hosted Git service. Prior to version 0.14.2, a stored cross-site scripting (XSS) vulnerability exists in the comment and issue description functionality. The application's HTML sanitizer explicitly allows data: URI schemes, enabling authenticated users to inject arbitrary JavaScript execution via malicious links. This issue has been patched in version 0.14.2.
Weakness: CWE-79
Which versions are affected by CVE-2026-26022?
3 open source packages ship an affected version, including gogs.io/gogs. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gogs.io/gogs Go | All versions | None |
gogs.io/gogs Go | All versions | 0.14.2 |
gogs.io/gogs Go | All versions | 0.14.2 |
Products include Gogs Gogs.
How do I fix CVE-2026-26022?
Upgrade gogs.io/gogs to 0.14.2 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-2026-26022 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26022 exists.
Other vulnerabilities in gogs
Sources
Also known as GHSA-xrcr-gmf5-2r8j, GO-2026-4620.