CVE-2026-106463— Backstage: Improper authorization in GitLab organizational user ingestion
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 是用于构建开发者门户的一个开源框架。在 0.8.7 版本之前， 包在处理 GitLab 组织用户导入时存在授权不当的安全问题。如果部署启用了 GitLab 组织事件导入功能，并且依赖范围限定（scoped）的 catalog 用户作为访问边界，可能会意外地引入未经授权的 catalog 身份。根据登录方式和权限配置的不同，这可能导致未授权访问，并赋予攻击者与标准已认证用户相同的权限。该问题已在版本 0.8.7 中修复。
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I. Basic Information for CVE-2026-106463
Vulnerability Information
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Vulnerability Title
Backstage: Improper authorization in GitLab organizational user ingestion
Source: CVE Program / CVE List V5
Vulnerability Description
Backstage is an open framework for building developer portals. Prior to 0.8.7, the @backstage/plugin-catalog-backend-module-gitlab package is affected by improper authorization in gitlab organizational user ingestion. Deployments that enable GitLab organization event ingestion and rely on scoped catalog users as an access boundary may admit an unintended catalog identity. Depending on sign-in and permission configuration, this may allow unauthorized access with the permissions of a standard authenticated user. This issue is fixed in version 0.8.7.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| backstage | backstage | < 1.54.6 | - |
|
| @backstage | plugin-catalog-backend-module-gitlab | < 0.8.7 | - |
|
II. Public POCs for CVE-2026-106463
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Pages for CVE-2026-106463 (1)
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🔗 Release v1.54.6 · backstage/backstage · GitHub x_refsource_MISC
Other References for CVE-2026-106463 (2)
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https://github.com/backstage/backstage/security/advisories/GHSA-gp6m-x9vw-5c5x x_refsource_CONFIRM
Same Patch Batch · backstage · 2026-10-06 · 18 CVEs total
| CVE-2026-106459 | 8.5 HIGH | Backstage: Improper input validation in Sentry scaffolder actions |
| CVE-2026-106486 | 8.5 HIGH | Backstage: Improper filesystem validation in Bitbucket pull-request scaffolder actions |
| 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-2026-106492 | 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-2026-106458 | 6.5 MEDIUM | Backstage: Inconsistent repository filtering in Bitbucket Server catalog event updates |
| 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-2026-106462 | 6.4 MEDIUM | Backstage: Scaffolder credential handling may allow unintended GitHub authentication fallb |
| CVE-2026-106491 | 6.4 MEDIUM | Backstage: Improper input validation in proxy-backend |
| CVE-2026-106456 | 4.8 MEDIUM | Backstage: Inconsistent credential enforcement for overlapping proxy routes |
| CVE-2026-106494 | 4.4 MEDIUM | Backstage: Improper input validation in cloud storage URL readers |
| CVE-2026-106461 | 4.3 MEDIUM | Backstage: Incorrect authorization in scaffolder task listing |
| CVE-2026-106487 | 3.5 LOW | Backstage: Unsupported catalog cluster authentication mode in kubernetes backend |
| CVE-2026-106493 | 3.0 LOW | Backstage: Cloud storage catalog locations may cross configured storage boundaries |
IV. Related Vulnerabilities
Same product: backstage
-
CVE-2026-106494
Backstage: Improper input validation in cloud storage URL re -
CVE-2026-106493
Backstage: Cloud storage catalog locations may cross configu -
CVE-2026-106492
Backstage: Improper preservation of access restrictions duri -
CVE-2026-106491
Backstage: Improper input validation in proxy-backend -
CVE-2026-106490
Backstage: Improper input validation in TechDocs static cont
Same vendor: backstage
-
CVE-2026-106494
Backstage: Improper input validation in cloud storage URL re -
CVE-2026-106493
Backstage: Cloud storage catalog locations may cross configu -
CVE-2026-106492
Backstage: Improper preservation of access restrictions duri -
CVE-2026-106491
Backstage: Improper input validation in proxy-backend -
CVE-2026-106490
Backstage: Improper input validation in TechDocs static cont
Same weakness: CWE-863
-
CVE-2026-106461
Backstage: Incorrect authorization in scaffolder task listin -
CVE-2026-106458
Backstage: Inconsistent repository filtering in Bitbucket Se -
CVE-2026-106456
Backstage: Inconsistent credential enforcement for overlappi -
CVE-2026-103007
Incorrect Authorization in Elasticsearch Leading to Privileg -
CVE-2026-102412
Incorrect Authorization in Kibana Leading to Sensitive Infor
V. Comments for CVE-2026-106463
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