CVE-2026-106462

mediumpriority · track · 0OT risk · elevatedEPSS 0.002 · 7 %ileUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.17% (7th) EPSS
CVSS 6.4 · medium
Is it mine?
13 products
Check your exposure
Who says so?
2 sources
nvd · osv

EPSS · scored 2026-10-27

Backstage is an open framework for building developer portals. Prior to 1.54.6, scaffolder source-control actions may not consistently enforce intended credential boundaries. An authenticated user could cause an affected action to fall back to broader integration credentials and perform operations with more access than intended. This issue is fixed in 1.54.6 when operators also enable scaffolder.requireScmUserCredentials after upgrading.

01

cvss

Technical severity, 0–10. One row per scoring source.

6.4
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:Nsecondary · security-advisories@github.comexploitability 3.1 · impact 2.7
v3.16.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:Nsecondary · OSV
v3.15.9mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

04

affected products (13)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • GHSA-29gx-h2m3-xw44Backstage's scaffolder credential handling may allow unintended GitHub authentication fallback2026-10-07ghsa · osvUS

    ### Impact Scaffolder actions that interact with source control systems may not consistently enforce the intended credential boundaries under certain configurations. An authenticated user could perform operations with broader access than intended. ### Patches - `@backstage/plugin-scaffolder-backend` version `4.1.0` - `@backstage/plugin-scaffolder-backend-module-azure` version `0.2.25` - `@backstage/plugin-scaffolder-backend-module-bitbucket-cloud` version `0.3.10` - `@backstage/plugin-scaffolder-backend-module-bitbucket-server` version `0.2.25` - `@backstage/plugin-scaffolder-backend-module-github` version `0.9.13` - `@backstage/plugin-scaffolder-backend-module-gitlab` version `0.11.10` The fix introduces a new configuration option that enforces user-provided credentials for supported SCM actions. The new behavior is opt-in for compatibility. After upgrading, set: ```yaml scaffolder: requireScmUserCredentials: true ``` Before enabling this setting, review and update your templates as described in the software templates documentation referred to below. ### Workarounds If you cannot upgrade and enable the setting immediately: - Restrict who can create Scaffolder tasks and which templates they can execute. - Limit SCM integration credentials to the minimum repository read and mutation permissions required. - Remove integration credentials for SCM hosts where all required operations can use explicitly supplied user tokens.

06

sources

Which sources assert this record, and when.

published 2026-10-06modified 2026-10-22
07

references (3) nvd

External citations — patches, advisories, analysis.

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