Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-106459— Backstage: Improper input validation in Sentry scaffolder actions

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。在版本 0.3.0 到 0.3.8 期间， 包中的 Sentry 脚手架操作存在输入验证不当的问题。已认证的内部用户如果能够执行受影响的脚手架操作，可能会导致后端联系到非预期的目标，并泄露 Sentry 集成凭据。后续影响取决于网络可达性以及配置令牌所获得的权限。该问题已在版本 0.3.8 中修复。

CVSS 8.5 · High
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-106459

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Backstage: Improper input validation in Sentry scaffolder actions
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
backstage backstage >= 1.47.0, < 1.54.8 -
@backstage plugin-scaffolder-backend-module-sentry >= 0.3.0, < 0.3.8 -

II. Public POCs for CVE-2026-106459

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-106459

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-106459 (1)

Vendor Pages for CVE-2026-106459 (2)

Same Patch Batch · backstage · 2026-10-06 · 32 CVEs total

CVE-2026-106501 9.6 CRITICAL Backstage: Sensitive information exposure in Scaffolder
CVE-2026-106486 8.5 HIGH Backstage: Improper filesystem validation in Bitbucket pull-request scaffolder actions
CVE-2026-106500 8.5 HIGH Backstage: Improper task state validation in Scaffolder backend
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-2026-106505 7.7 HIGH Backstage: Bypass of MkDocs configuration sanitizer in TechDocs backend
CVE-2026-106509 7.7 HIGH Backstage: Improper validation of MkDocs theme configuration in TechDocs
CVE-2026-106498 7.7 HIGH Backstage: Improper URL validation in catalog entity placeholder resolution
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-2026-106489 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-2026-106490 6.5 MEDIUM Backstage: Improper input validation in TechDocs static content requests
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
CVE-2026-106508 5.3 MEDIUM Backstage: Potential file exposure through local TechDocs publisher

Showing top 20 of 32 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: backstage
Same vendor: backstage
Same weakness: CWE-200

V. Comments for CVE-2026-106459

No comments yet

Leave a comment