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CVE-2026-106459

nvd nist
Published: Oct 6, 2026Modified: Oct 13, 2026

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8.5
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Exploitability: 3.1 / Impact: 4.7
Source: security-advisories@github.com (Secondary)

Description

Backstage is an open framework for building developer portals. From 0.3.0 until 0.3.8, the @backstage/plugin-scaffolder-backend-module-sentry package is affected by improper input validation in sentry scaffolder actions. An authenticated internal user who can execute the affected actions may cause the backend to contact unintended destinations and disclose Sentry integration credentials. Subsequent impact depends on network reachability and the privileges granted to the configured token. This issue is fixed in version 0.3.8.

Affected (2)

Linuxfoundation
2 products
Backstage/plugin Scaffolder Backend Module Sentry
Backstage
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Backstage/plugin Scaffolder Backend Module Sentry
0.3.0 ≤ version < 0.3.8
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Backstage
1.47.0 ≤ version < 1.54.8

Related CWEs

CWE-200
Exposure of Sensitive Information to an Unauthorized Actor
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CWE-918
Server-Side Request Forgery (SSRF)
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

References (4)

Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
PatchProduct
Source: security-advisories@github.com
PatchProduct
Source: security-advisories@github.com
MitigationVendor Advisory

Timeline

No history available yet.