VYPR
Low severity2.6OSV Advisory· Published Aug 15, 2025· Updated Apr 15, 2026

CVE-2025-55285

CVE-2025-55285

Description

@backstage/plugin-scaffolder-backend is the backend for the default Backstage software templates. Prior to version 2.1.1, duplicate logging of the input values in the fetch:template action in the Scaffolder meant that some of the secrets were not properly redacted. If ${{ secrets.x }} is not passed through to fetch:template there is no impact. This issue has been resolved in 2.1.1 of the scaffolder-backend plugin. A workaround for this issue involves Template Authors removing the use of ${{ secrets }} being used as an argument to fetch:template.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
@backstage/plugin-scaffolder-backendnpm
< 2.1.12.1.1

Affected products

1

Patches

1
c371f6fe1237

chore: dont log splat values in logger

https://github.com/backstage/backstagebenjdlambertAug 15, 2025via ghsa
1 file changed · +5 6
  • plugins/scaffolder-backend/src/scaffolder/tasks/logger.ts+5 6 modified
    @@ -61,23 +61,22 @@ export class BackstageLoggerTransport extends Transport {
     
         const message = info[MESSAGE];
         const level = info[LEVEL];
    -    const splat = info[SPLAT];
     
         switch (level) {
           case 'error':
    -        this.backstageLogger.error(String(message), ...splat);
    +        this.backstageLogger.error(String(message));
             break;
           case 'warn':
    -        this.backstageLogger.warn(String(message), ...splat);
    +        this.backstageLogger.warn(String(message));
             break;
           case 'info':
    -        this.backstageLogger.info(String(message), ...splat);
    +        this.backstageLogger.info(String(message));
             break;
           case 'debug':
    -        this.backstageLogger.debug(String(message), ...splat);
    +        this.backstageLogger.debug(String(message));
             break;
           default:
    -        this.backstageLogger.info(String(message), ...splat);
    +        this.backstageLogger.info(String(message));
         }
     
         this.taskContext.emitLog(message, { stepId: this.stepId });
    

Vulnerability mechanics

Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

4

News mentions

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