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Golang.org/x/net Golang.org/x/net/html vulnerabilities

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Published CVEs affecting Golang.org/x/net Golang.org/x/net/html: 7 record(s), with affected versions and fixes.

CVE-2026-42506 Medium · 6.1 CWE-79 May 22, 2026
Invoking incorrect handling of namespaced elements in foreign content in golang.org/x/net/html
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.
CVE-2026-42502 Medium · 6.1 CWE-1021 May 22, 2026
Invoking incorrect handling of HTML elements in foreign content in golang.org/x/net/html
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.
CVE-2026-27136 Medium · 6.1 CWE-1021 May 22, 2026
Invoking duplicate attributes can cause XSS in golang.org/x/net/html
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.
CVE-2026-25681 Medium · 6.1 CWE-1021 May 22, 2026
Invoking incorrect handling of character references in DOCTYPE nodes in golang.org/x/net/html
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.
CVE-2026-25680 Medium · 6.5 CWE-400 May 22, 2026
Invoking denial of service when parsing arbitrary HTML in golang.org/x/net/html
Parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service.
CVE-2025-58190 Medium · 5.3 CWE-835 Feb 5, 2026
Infinite parsing loop in golang.org/x/net
The html.Parse function in golang.org/x/net/html has an infinite parsing loop when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
CVE-2025-47911 Medium · 5.3 Feb 5, 2026
Quadratic parsing complexity in golang.org/x/net/html
The html.Parse function in golang.org/x/net/html has quadratic parsing complexity when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.