Low severity · published Aug 15, 2025
CVE-2025-55285
@backstage/plugin-scaffolder-backend Template Secret Leakage in Logs in Scaffolder When Using `fetch:template`
2.6
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
High
User interaction
Required
Confidentiality
Low
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BA
backstage · backstage
< 2.1.1 · source: vendor
Affected product
BA
backstage
backstage
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