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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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      <title>fkie_cve-2026-106499</title>
      <link>https://vulnerability.circl.lu/vuln/fkie_cve-2026-106499</link>
      <description>&lt;p&gt;Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted and exposed to users who can access the resulting task logs. This issue is fixed in version 4.1.0.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted and exposed to users who can access the resulting task logs. This issue is fixed in version 4.1.0.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/fkie_cve-2026-106499</guid>
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      <title>GHSA-mfvq-x7vr-rgqg — Backstage: Secret-derived values may be exposed in scaffolder task logs</title>
      <link>https://vulnerability.circl.lu/vuln/ghsa-mfvq-x7vr-rgqg</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; npm: @backstage/plugin-scaffolder-backend&lt;/p&gt;
&lt;p&gt;### Impact&lt;/p&gt;
&lt;p&gt;Deployments that configure sensitive `scaffolder.defaultEnvironment.secrets` and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted in task logs, exposing those values to users with access to the resulting task logs.&lt;/p&gt;
&lt;p&gt;### Patches&lt;/p&gt;
&lt;p&gt;Patched in `@backstage/plugin-scaffolder-backend` version `4.1.0`&lt;/p&gt;
&lt;p&gt;### Workarounds&lt;/p&gt;
&lt;p&gt;- Restrict permission to create or update Template entities to fully trusted parties, as recommended by the Backstage threat model.
- If that restriction cannot be guaranteed, remove sensitive values from `scaffolder.defaultEnvironment.secrets` until a patched version is available.&lt;/p&gt;
&lt;p&gt;No complete workaround is known that preserves both untrusted template authoring and access to sensitive default-environment secrets.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; npm: @backstage/plugin-scaffolder-backend&lt;/p&gt;
&lt;p&gt;### Impact&lt;/p&gt;
&lt;p&gt;Deployments that configure sensitive `scaffolder.defaultEnvironment.secrets` and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted in task logs, exposing those values to users with access to the resulting task logs.&lt;/p&gt;
&lt;p&gt;### Patches&lt;/p&gt;
&lt;p&gt;Patched in `@backstage/plugin-scaffolder-backend` version `4.1.0`&lt;/p&gt;
&lt;p&gt;### Workarounds&lt;/p&gt;
&lt;p&gt;- Restrict permission to create or update Template entities to fully trusted parties, as recommended by the Backstage threat model.
- If that restriction cannot be guaranteed, remove sensitive values from `scaffolder.defaultEnvironment.secrets` until a patched version is available.&lt;/p&gt;
&lt;p&gt;No complete workaround is known that preserves both untrusted template authoring and access to sensitive default-environment secrets.&lt;/p&gt;</content:encoded>
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