Update module golang.org/x/net to v0.55.0 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
golang.org/x/net	v0.54.0 → v0.55.0

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Warning

Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

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Invoking incorrect handling of namespaced elements in foreign content in golang.org/x/net/html

CVE-2026-42506 / GO-2026-5025

More information

Details

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.

Severity

Unknown

References

• https://go.dev/issue/79571
• https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8
• https://go.dev/cl/781700

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).

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Invoking failure to reject ASCII-only Punycode-encoded labels in golang.org/x/net/idna

CVE-2026-39821 / GO-2026-5026

More information

Details

The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode("xn--example-.com") incorrectly returns the name "example.com" rather than an error.

This behavior can lead to privilege escalation in programs using the idna package. For example, a program which performs privilege checks on the ASCII hostname may reject "example.com" but permit "xn--example-.com". If that program subsequently converts the ASCII hostname to Unicode, it will inadvertently permits access to the Unicode name "example.com".

Severity

Unknown

References

• https://go.dev/cl/767220
• https://go.dev/issue/78760
• https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).

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Invoking incorrect handling of HTML elements in foreign content in golang.org/x/net/html

CVE-2026-42502 / GO-2026-5027

More information

Details

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.

Severity

Unknown

References

• https://go.dev/issue/79572
• https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8
• https://go.dev/cl/781701

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).

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Invoking denial of service when parsing arbitrary HTML in golang.org/x/net/html

CVE-2026-25680 / GO-2026-5028

More information

Details

Parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service.

Severity

Unknown

References

• https://go.dev/cl/781702
• https://go.dev/issue/79573
• https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).

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Invoking incorrect handling of character references in DOCTYPE nodes in golang.org/x/net/html

CVE-2026-25681 / GO-2026-5029

More information

Details

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.

Severity

Unknown

References

• https://go.dev/issue/79574
• https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8
• https://go.dev/cl/781703

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).

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Invoking duplicate attributes can cause XSS in golang.org/x/net/html

CVE-2026-27136 / GO-2026-5030

More information

Details

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.

Severity

Unknown

References

• https://go.dev/issue/79575
• https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8
• https://go.dev/cl/781685

This data is provided by OSV and the Go Vulnerability Database (CC-BY 4.0).

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.63%. Comparing base (33afcac) to head (82405d2).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #574   +/-   ##
=======================================
  Coverage   73.63%   73.63%           
=======================================
  Files          19       19           
  Lines        2958     2958           
=======================================
  Hits         2178     2178           
  Misses        525      525           
  Partials      255      255           

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