CVE-2026-106502— Backstage: Sensitive information may be exposed in Scaffolder task failure events
Quick assessment
Affected
backstage backstage
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Backstage 是一个用于构建开发者门户的开源框架。在 4.1.0 版本之前，@backstage/plugin-scaffolder-backend 包可能在 Scaffolder 任务失败事件中暴露敏感信息。在特定的模板和失败条件下，经过身份验证的用户可以从受影响的任务事件中获取任务执行期间使用的后端管理的凭据。此问题已在 4.1.0 版本中得到修复。
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I. Basic Information for CVE-2026-106502
Vulnerability Information
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Vulnerability Title
Backstage: Sensitive information may be exposed in Scaffolder task failure events
Source: CVE Program / CVE List V5
Vulnerability Description
Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose sensitive information in Scaffolder task failure events. Under specific template and failure conditions, an authenticated user may retrieve backend-managed credentials used during task execution from affected task events. This issue is fixed in version 4.1.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过日志文件的信息暴露
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| backstage | backstage | < 1.54.6 | - |
|
| @backstage | plugin-scaffolder-backend | < 4.1.0 | - |
|
II. Public POCs for CVE-2026-106502
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Pages for CVE-2026-106502 (1)
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🔗 Release v1.54.6 · backstage/backstage · GitHub x_refsource_MISC
Other References for CVE-2026-106502 (2)
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https://github.com/backstage/backstage/security/advisories/GHSA-95p4-vv4g-jxxm x_refsource_CONFIRM
Same Patch Batch · backstage · 2026-10-06 · 32 CVEs total
| CVE-2026-106501 | 9.6 CRITICAL | Backstage: Sensitive information exposure in Scaffolder |
| CVE-2026-106459 | 8.5 HIGH | Backstage: Improper input validation in Sentry scaffolder actions |
| CVE-2026-106500 | 8.5 HIGH | Backstage: Improper task state validation in Scaffolder backend |
| CVE-2026-106486 | 8.5 HIGH | Backstage: Improper filesystem validation in Bitbucket pull-request scaffolder actions |
| CVE-2026-106503 | 8.1 HIGH | Backstage: Scaffolder action input authorization bypass |
| CVE-2026-106488 | 8.1 HIGH | Backstage: Improper authentication in the OIDC provider |
| CVE-2026-106455 | 7.7 HIGH | Backstage: Improper validation of MkDocs plugin configuration in TechDocs |
| CVE-2026-106498 | 7.7 HIGH | Backstage: Improper URL validation in catalog entity placeholder resolution |
| CVE-2026-106509 | 7.7 HIGH | Backstage: Improper validation of MkDocs theme configuration in TechDocs |
| CVE-2026-106505 | 7.7 HIGH | Backstage: Bypass of MkDocs configuration sanitizer in TechDocs backend |
| CVE-2026-106492 | 7.6 HIGH | Backstage: Improper preservation of access restrictions during service credential delegati |
| CVE-2026-106460 | 6.8 MEDIUM | Backstage: Explicit negative email verification can be ignored during shared OAuth profile |
| CVE-2026-106457 | 6.8 MEDIUM | Backstage: Insufficient audience validation in the Cloudflare Access auth provider |
| CVE-2026-106490 | 6.5 MEDIUM | Backstage: Improper input validation in TechDocs static content requests |
| CVE-2026-106489 | 6.5 MEDIUM | Backstage: Improper authorization enforcement for TechDocs static content |
| CVE-2026-106504 | 6.5 MEDIUM | Backstage: Sensitive information exposure in scaffolder task logs |
| CVE-2026-106458 | 6.5 MEDIUM | Backstage: Inconsistent repository filtering in Bitbucket Server catalog event updates |
| CVE-2026-106491 | 6.4 MEDIUM | Backstage: Improper input validation in proxy-backend |
| CVE-2026-106462 | 6.4 MEDIUM | Backstage: Scaffolder credential handling may allow unintended GitHub authentication fallb |
| CVE-2026-106463 | 5.4 MEDIUM | Backstage: Improper authorization in GitLab organizational user ingestion |
Showing top 20 of 32 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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CVE-2026-106509
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Same vendor: backstage
-
CVE-2026-106509
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CVE-2026-106508
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CVE-2026-106507
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CVE-2026-106506
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CVE-2026-106505
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Same weakness: CWE-532
-
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CVE-2026-61411
Dell Container Storage Modules <1.18.0 日志信息泄露 -
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Armatura LLC Armatura One Insertion of Sensitive Information
V. Comments for CVE-2026-106502
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