Vulnerability-Lookup

CVE-2025-55285 (GCVE-0-2025-55285)

Vulnerability from cvelistv5 – Published: 2025-08-15 17:10 – Updated: 2025-08-15 17:49

Title

@backstage/plugin-scaffolder-backend Template Secret Leakage in Logs in Scaffolder When Using `fetch:template`

Summary

@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.

Severity

2.6 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-08-15 17:49 UTC

CWE

CWE-532 - Insertion of Sensitive Information into Log File

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 8077 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/backstage/backstage/security/a…	x_refsource_CONFIRM
https://github.com/backstage/backstage/commit/c37…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
backstage	backstage	Affected: < 2.1.1	guessed

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2025-55285",
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        }
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          "tags": [
            "x_refsource_MISC"
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      "title": "@backstage/plugin-scaffolder-backend Template Secret Leakage in Logs in Scaffolder When Using `fetch:template`"
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                "vendor": "backstage",
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                    "version": "\u003c 2.1.1"
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          },
          {
            "lang": "es",
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          }
        ],
        "id": "CVE-2025-55285",
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                "attackComplexity": "HIGH",
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                "confidentialityImpact": "LOW",
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                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 1.0,
              "impactScore": 1.4,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ],
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          },
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      "product_status:known_affected": "3",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "@backstage/plugin-scaffolder-backend: @backstage/plugin-scaffolder-backend Template Secret Leakage in Logs",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-55285.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
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          {
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              {
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                    "id": "CVE-2025-55285",
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              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
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          ],
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            {
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            }
          ],
          "metrics": [
            {
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          },
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              ],
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            },
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              "name": "https://github.com/backstage/backstage/commit/c371f6fe12371de31dca537510e6653e287cdc2e",
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          "source": {
            "advisory": "GHSA-3x3q-ghcp-whf7",
            "discovery": "UNKNOWN"
          },
          "title": "@backstage/plugin-scaffolder-backend Template Secret Leakage in Logs in Scaffolder When Using `fetch:template`"
        }
      },
      "cveMetadata": {
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        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2025-55285",
        "datePublished": "2025-08-15T17:10:26.735Z",
        "dateReserved": "2025-08-12T16:15:30.236Z",
        "dateUpdated": "2025-08-15T17:49:24.677Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

FKIE_CVE-2025-55285

Vulnerability from fkie_nvd - Published: 2025-08-15 18:15 - Updated: 2026-06-17 09:41

Severity

2.6 (Low) - CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/backstage/backstage/commit/c371f6fe12371de31dca537510e6653e287cdc2e
	security-advisories@github.com	https://github.com/backstage/backstage/security/advisories/GHSA-3x3q-ghcp-whf7

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "backstage",
          "vendor": "backstage",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.1.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "@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."
    },
    {
      "lang": "es",
      "value": "@backstage/plugin-scaffolder-backend es el backend para las plantillas predeterminadas del software Backstage. Antes de la versi\u00f3n 2.1.1, el registro duplicado de los valores de entrada en la acci\u00f3n fetch:template del Scaffolder provocaba que algunos secretos no se redactaran correctamente. Si ${{ secrets.x }} no se pasa a fetch:template, no hay impacto. Este problema se ha resuelto en la versi\u00f3n 2.1.1 del complemento scaffolder-backend. Una soluci\u00f3n alternativa consiste en que los autores de plantillas eliminen el uso de ${{ secrets }} como argumento para fetch:template."
    }
  ],
  "id": "CVE-2025-55285",
  "lastModified": "2026-06-17T09:41:35.103",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 2.6,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
            {
              "exploitation": "none"
            },
            {
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            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-08-15T17:49:07.268161Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-08-15T18:15:27.943",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/backstage/backstage/commit/c371f6fe12371de31dca537510e6653e287cdc2e"
    },
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    }
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  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-532"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-3X3Q-GHCP-WHF7

Vulnerability from github – Published: 2025-08-15 18:43 – Updated: 2025-09-26 17:19

Summary

Template Secret leakage in logs in Scaffolder when using `fetch:template`

Details

A logging flaw in Backstage Scaffolder’s fetch:template action up to @backstage/plugin-scaffolder-backend 2.1.0 may write template secrets to logs. The action emitted a duplicate, pre-redaction copy of input parameters, so values provided via the {{ secrets }} bag could appear in local/server logs when the action ran. Exploitation requires use of the secrets argument and access to Scaffolder/build logs; integrity and availability are unaffected.

Fix: upgrade to 2.1.1, which removes the duplicate log path and ensures secrets are redacted.
Mitigation: avoid passing {{ secrets }} to fetch:template if upgrade is not possible.

Open an issue in the Backstage repository

Visit our Discord, linked to in Backstage README

Severity

2.6 (Low)


                  
                    CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.1.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@backstage/plugin-scaffolder-backend"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-55285"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-532"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-08-15T18:43:16Z",
    "nvd_published_at": "2025-08-15T18:15:27Z",
    "severity": "LOW"
  },
  "details": "A logging flaw in Backstage Scaffolder\u2019s `fetch:template` action up to `@backstage/plugin-scaffolder-backend` **2.1.0** may write template secrets to logs. The action emitted a duplicate, pre-redaction copy of input parameters, so values provided via the `{{ secrets }}` bag could appear in local/server logs when the action ran. Exploitation requires use of the `secrets` argument and access to Scaffolder/build logs; integrity and availability are unaffected.\n\n*   **Fix:** upgrade to `2.1.1`, which removes the duplicate log path and ensures secrets are redacted.\n*   **Mitigation:** avoid passing `{{ secrets }}` to `fetch:template` if upgrade is not possible.\n\n\u003e Open an issue in the [Backstage repository](https://github.com/backstage/backstage)\n\u003e\n\u003e Visit our Discord, linked to in [Backstage README](https://github.com/backstage/backstage)",
  "id": "GHSA-3x3q-ghcp-whf7",
  "modified": "2025-09-26T17:19:17Z",
  "published": "2025-08-15T18:43:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/backstage/backstage/security/advisories/GHSA-3x3q-ghcp-whf7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-55285"
    },
    {
      "type": "WEB",
      "url": "https://github.com/backstage/backstage/commit/c371f6fe12371de31dca537510e6653e287cdc2e"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/backstage/backstage"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Template Secret leakage in logs in Scaffolder when using `fetch:template`"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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CVE-2025-55285 (GCVE-0-2025-55285)

FKIE_CVE-2025-55285

GHSA-3X3Q-GHCP-WHF7

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Related by attack behaviour