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@renovate renovate bot commented Jan 23, 2026

This PR contains the following updates:

Package Change Age Confidence
@backstage/plugin-scaffolder-backend (source) 3.0.13.0.2 age confidence

GitHub Vulnerability Alerts

CVE-2026-24046

Impact

Multiple Scaffolder actions and archive extraction utilities were vulnerable to symlink-based path traversal attacks. An attacker with access to create and execute Scaffolder templates could exploit symlinks to:

  1. Read arbitrary files via the debug:log action by creating a symlink pointing to sensitive files (e.g., /etc/passwd, configuration files, secrets)
  2. Delete arbitrary files via the fs:delete action by creating symlinks pointing outside the workspace
  3. Write files outside the workspace via archive extraction (tar/zip) containing malicious symlinks

This affects any Backstage deployment where users can create or execute Scaffolder templates.

Patches

This vulnerability is fixed in the following package versions:

  • @backstage/backend-defaults version 0.12.2, 0.13.2, 0.14.1, 0.15.0
  • @backstage/plugin-scaffolder-backend version 2.2.2, 3.0.2, 3.1.1
  • @backstage/plugin-scaffolder-node version 0.11.2, 0.12.3

Users should upgrade to these versions or later.

Workarounds

  • Follow the recommendation in the Backstage Threat Model to limit access to creating and updating templates
  • Restrict who can create and execute Scaffolder templates using the permissions framework
  • Audit existing templates for symlink usage
  • Run Backstage in a containerized environment with limited filesystem access

References


Release Notes

backstage/backstage (@​backstage/plugin-scaffolder-backend)

v3.0.2

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…v3.0.2 [security]

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
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openshift-ci bot commented Jan 23, 2026

Hi @renovate[bot]. Thanks for your PR.

I'm waiting for a redhat-developer member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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@christoph-jerolimov
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/ok-to-test

@kim-tsao
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Failing on quickstart tests, overriding
/override ci/prow/e2e-ocp-helm

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openshift-ci bot commented Jan 27, 2026

@kim-tsao: Overrode contexts on behalf of kim-tsao: ci/prow/e2e-ocp-helm

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In response to this:

Failing on quickstart tests, overriding
/override ci/prow/e2e-ocp-helm

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/cherrypick release-1.9

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@kim-tsao: once the present PR merges, I will cherry-pick it on top of release-1.9 in a new PR and assign it to you.

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/cherrypick release-1.9

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/lgtm
/approve

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openshift-ci bot commented Jan 27, 2026

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kim-tsao

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@kim-tsao kim-tsao merged commit 3cdacf2 into main Jan 27, 2026
33 checks passed
@kim-tsao kim-tsao deleted the renovate/npm-backstage-plugin-scaffolder-backend-vulnerability branch January 27, 2026 13:52
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@kim-tsao: new pull request created: #4074

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In response to this:

/cherrypick release-1.9

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3 participants