6.1
Medium
CVE-2026-25681 Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree
Description
Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| golang.org/x/net/html 0.55 | earliest → < 0.55.0 | 0.55.0 |
Other CVEs of golang.org/x/net/html
The 12 CVEs of golang.org/x/net/html →
CVE-2026-78661
Avoid quadratic complexity when coalescing text nodes in html in golang.org/x/net
7.5
High
CVE-2026-97045
Check all ancestor namespace transitions when rendering raw text in html in golang.org/x/net
6.1
Medium
CVE-2026-27136
Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree
6.1
Medium
CVE-2026-42502
Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree
6.1
Medium