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CVE

CVE-2026-106501

Backstage: Sensitive information exposure in Scaffolder
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CVE

CVE-2026-106501

Backstage: Sensitive information exposure in Scaffolder

Backstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by sensitive information exposure in scaffolder. An authenticated Backstage user who can read another user's Scaffolder task may receive internal execution data. In deployments where that data contains credentials for an external service, this may permit disclosure and unauthorized changes in that external service. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.6
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
C
H
U
-

Related Resources

No items found.

References

https://github.com/backstage/backstage/releases/tag/v1.49.6, https://github.com/backstage/backstage/releases/tag/v1.50.5, https://github.com/backstage/backstage/releases/tag/v1.54.6, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106501.json, https://github.com/backstage/backstage/security/advisories/GHSA-g2v8-7jhw-pp8p, https://nvd.nist.gov/vuln/detail/CVE-2026-106501, https://github.com/backstage/backstage/commit/66d2219edf0abe33ab7d0c1ced5d069d1e065be5, https://github.com/backstage/backstage/commit/c19838870476a8e29144c84b1a5ac0654ec20fb5, https://github.com/backstage/backstage/commit/e262d649981ff99bb01ca7077807ae3e25e85560

Severity

9.6

CVSS Score
0
10

Basic Information

Base CVSS
9.6
EPSS Probability
0.00484%
EPSS Percentile
0.41731%
Introduced Version
cfb9f07c281effcb0683e8372fd0ee4edda498bf
Fix Available
e262d649981ff99bb01ca7077807ae3e25e85560

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