fix(security/UNKNOWN/): Update security golang.org/x/net to v0.55.0 [SECURITY] (release-3.6.x)

[renovate-sh-app]

This PR contains the following updates:

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

---

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).

---

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).

---

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).

---

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).

---

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).

---

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).

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

Need help?

You can ask for more help in the following Slack channel: #proj-renovate-self-hosted. In that channel you can also find ADR and FAQ docs in the Resources section.

[github-actions]

⚠️ The workflow jobs listed below don't declare a permissions: block and may break when the organization's default GITHUB_TOKEN permissions are restricted to read-only.

Expand for findings

warning[excessive-permissions]: overly broad permissions
   --> ./.github/workflows/helm-ci.yml:2:1
    |
  2 | / name: helm-ci
  3 | | on:
  4 | |   pull_request:
  5 | |     paths:
...   |
156 | |           TEST_DIRECTORY: "source/${{ env.INTEGRARION_TESTS_DIR }}/${{ matrix.test }}"
157 | |           DELETE_CLUSTER: true
    | |_______________________________^ default permissions used due to no permissions: block
    |
    = note: audit confidence → Medium
    = help: audit documentation → https://docs.zizmor.sh/audits/#excessive-permissions

warning[excessive-permissions]: overly broad permissions
   --> ./.github/workflows/helm-ci.yml:93:3
    |
 93 | /   list-integration-tests:
 94 | |     name: List integration tests
 95 | |     runs-on: ubuntu-latest
 96 | |     outputs:
...   |
111 | |           echo "Tests: ${tests}"
112 | |           echo "tests=$(echo "${tests}" | jq --raw-input --slurp --compact-output 'split("\n") | map(select(. != ""))')" >> "${GITHUB_OUTPUT}"
    | |                                                                                                                                              ^
    | |                                                                                                                                              |
    | |______________________________________________________________________________________________________________________________________________this job
    |                                                                                                                                                default permissions used due to no permissions: block
    |
    = note: audit confidence → Medium
    = help: audit documentation → https://docs.zizmor.sh/audits/#excessive-permissions

warning[excessive-permissions]: overly broad permissions
   --> ./.github/workflows/helm-ci.yml:114:3
    |
114 | /   run-integration-tests:
115 | |     name: Integration Test
116 | |     needs: list-integration-tests
117 | |     runs-on: ubuntu-latest
...   |
156 | |           TEST_DIRECTORY: "source/${{ env.INTEGRARION_TESTS_DIR }}/${{ matrix.test }}"
157 | |           DELETE_CLUSTER: true
    | |                               ^
    | |                               |
    | |_______________________________this job
    |                                 default permissions used due to no permissions: block
    |
    = note: audit confidence → Medium
    = help: audit documentation → https://docs.zizmor.sh/audits/#excessive-permissions

warning[excessive-permissions]: overly broad permissions
  --> ./.github/workflows/operator-images.yaml:1:1
   |
 1 | / name: operator images
 2 | |
 3 | | on:
 4 | |   push:
...  |
45 | |       image_name: "storage-size-calculator"
46 | |       tag: "latest"
   | |____________________^ default permissions used due to no permissions: block
   |
   = note: audit confidence → Medium
   = help: audit documentation → https://docs.zizmor.sh/audits/#excessive-permissions

warning[excessive-permissions]: overly broad permissions
  --> ./.github/workflows/operator-images.yaml:12:3
   |
12 | /   publish-grafana-operator:
13 | |     uses: ./.github/workflows/operator-reusable-image-build.yml
14 | |     with:
15 | |       dockerfile: "operator/Dockerfile"
...  |
18 | |       image_name: "loki-operator"
19 | |       tag: "latest"
   | |                   ^
   | |                   |
   | |___________________this job
   |                     default permissions used due to no permissions: block
   |
   = note: audit confidence → Medium
   = help: audit documentation → https://docs.zizmor.sh/audits/#excessive-permissions

warning[excessive-permissions]: overly broad permissions
  --> ./.github/workflows/operator-images.yaml:21:3
   |
21 | /   publish-openshift-operator:
22 | |     uses: ./.github/workflows/operator-reusable-image-build.yml
23 | |     with:
24 | |       dockerfile: "operator/Dockerfile"
...  |
27 | |       image_name: "loki-operator"
28 | |       tag: "latest"
   | |                   ^
   | |                   |
   | |___________________this job
   |                     default permissions used due to no permissions: block
   |
   = note: audit confidence → Medium
   = help: audit documentation → https://docs.zizmor.sh/audits/#excessive-permissions

warning[excessive-permissions]: overly broad permissions
  --> ./.github/workflows/operator-images.yaml:30:3
   |
30 | /   publish-openshift-bundle:
31 | |     uses: ./.github/workflows/operator-reusable-image-build.yml
32 | |     with:
33 | |       dockerfile: "operator/bundle/openshift/bundle.Dockerfile"
...  |
36 | |       image_name: "loki-operator-bundle"
37 | |       tag: "latest"
   | |                   ^
   | |                   |
   | |___________________this job
   |                     default permissions used due to no permissions: block
   |
   = note: audit confidence → Medium
   = help: audit documentation → https://docs.zizmor.sh/audits/#excessive-permissions

warning[excessive-permissions]: overly broad permissions
  --> ./.github/workflows/operator-images.yaml:39:3
   |
39 | /   publish-openshift-size-calculator:
40 | |     uses: ./.github/workflows/operator-reusable-image-build.yml
41 | |     with:
42 | |       dockerfile: "operator/calculator.Dockerfile"
...  |
45 | |       image_name: "storage-size-calculator"
46 | |       tag: "latest"
   | |                    ^
   | |                    |
   | |____________________this job
   |                      default permissions used due to no permissions: block
   |
   = note: audit confidence → Medium
   = help: audit documentation → https://docs.zizmor.sh/audits/#excessive-permissions