Vulnerability-Lookup

CVE-2026-29185 (GCVE-0-2026-29185)

Vulnerability from cvelistv5 – Published: 2026-03-07 15:02 – Updated: 2026-03-09 20:24

Title

@backstage/integration: Potential reading of SCM URLs using built in token

Summary

Backstage is an open framework for building developer portals. Prior to version 1.20.1, a vulnerability in the SCM URL parsing used by Backstage integrations allowed path traversal sequences in encoded form to be included in file paths. When these URLs were processed by integration functions that construct API URLs, the traversal segments could redirect requests to unintended SCM provider API endpoints using the configured server-side integration credentials. This issue has been patched in version 1.20.1.

Severity ?

2.7 (Low)


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

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M

References

URL

Tags

https://github.com/backstage/backstage/security/a…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	backstage	backstage	Affected: < 1.20.1

Show details on NVD website

JSON

To clipboard

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GHSA-95V5-PRP4-5GV5

Vulnerability from github – Published: 2026-03-05 00:20 – Updated: 2026-03-09 15:46

Summary

Backstage vulnerable to potential reading of SCM URLs using built in token

Details

Impact

A vulnerability in the SCM URL parsing used by Backstage integrations allowed path traversal sequences in encoded form to be included in file paths. When these URLs were processed by integration functions that construct API URLs, the traversal segments could redirect requests to unintended SCM provider API endpoints using the configured server-side integration credentials.

This affects instances that use any of the SCM integrations (GitHub, Bitbucket Server, Bitbucket Cloud) with the scaffolder or other features that accept user-provided SCM URLs.

Patches

This is patched in @backstage/integration version 1.20.1.

Workarounds

There is no workaround for this vulnerability. Users should upgrade to the patched version.

References

Backstage SCM integration documentation: https://backstage.io/docs/integrations/

Severity ?

2.7 (Low)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.20.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@backstage/integration"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.20.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-29185"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-05T00:20:45Z",
    "nvd_published_at": "2026-03-07T15:15:55Z",
    "severity": "LOW"
  },
  "details": "### Impact\n\nA vulnerability in the SCM URL parsing used by Backstage integrations allowed path traversal sequences in encoded form to be included in file paths. When these URLs were processed by integration functions that construct API URLs, the traversal segments could redirect requests to unintended SCM provider API endpoints using the configured server-side integration credentials.\n\nThis affects instances that use any of the SCM integrations (GitHub, Bitbucket Server, Bitbucket Cloud) with the scaffolder or other features that accept user-provided SCM URLs.\n\n###  Patches\n\nThis is patched in `@backstage/integration` version 1.20.1.\n\n### Workarounds\n\nThere is no workaround for this vulnerability. Users should upgrade to the patched version.\n\n###  References \n\n  - Backstage SCM integration documentation: https://backstage.io/docs/integrations/",
  "id": "GHSA-95v5-prp4-5gv5",
  "modified": "2026-03-09T15:46:52Z",
  "published": "2026-03-05T00:20:45Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/backstage/backstage/security/advisories/GHSA-95v5-prp4-5gv5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29185"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/backstage/backstage"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Backstage vulnerable to potential reading of SCM URLs using built in token"
}

FKIE_CVE-2026-29185

Vulnerability from fkie_nvd - Published: 2026-03-07 15:15 - Updated: 2026-04-09 18:29

Severity ?

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

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/backstage/backstage/security/advisories/GHSA-95v5-prp4-5gv5	Patch, Vendor Advisory

Impacted products

	Vendor	Product	Version
	linuxfoundation	\@backstage\/integration	*

JSON

To clipboard

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    },
    {
      "lang": "es",
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    }
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  "lastModified": "2026-04-09T18:29:39.100",
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}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-29185 (GCVE-0-2026-29185)

GHSA-95V5-PRP4-5GV5

Impact

Patches

Workarounds

References

FKIE_CVE-2026-29185

Tags

Sightings

Nomenclature