{"cve":"CVE-2026-106462","nvd":{"published":"2026-10-06T21:17:17.020","modified":"2026-10-22T18:53:09.440","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","score":6.4},"cwes":["CWE-441","CWE-863"],"references":["https://github.com/backstage/backstage/commit/6fb2a41ea47da37eafe5ea744050ef90be6820c0","https://github.com/backstage/backstage/releases/tag/v1.54.6","https://github.com/backstage/backstage/security/advisories/GHSA-29gx-h2m3-xw44"],"products":["linuxfoundation:backstage","linuxfoundation:backstage\\/plugin-scaffolder-backend","linuxfoundation:backstage\\/plugin-scaffolder-backend-module-azure","linuxfoundation:backstage\\/plugin-scaffolder-backend-module-bitbucket-cloud","linuxfoundation:backstage\\/plugin-scaffolder-backend-module-bitbucket-server","linuxfoundation:backstage\\/plugin-scaffolder-backend-module-github","linuxfoundation:backstage\\/plugin-scaffolder-backend-module-gitlab"],"source":"nvd","synced_at":"2026-10-23T16:39:26.291718493+00:00"},"epss":{"cve":"CVE-2026-106462","score":0.00172,"percentile":0.0651,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-29gx-h2m3-xw44","url":"https://osv.dev/vulnerability/GHSA-29gx-h2m3-xw44","summary":"Backstage's scaffolder credential handling may allow unintended GitHub authentication fallback","modified":"2026-10-07T18:15:12.714484672Z","packages":[{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend","ranges":["<4.1.0"],"fixed":["4.1.0"]},{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend-module-github","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend-module-github","ranges":["<0.9.13"],"fixed":["0.9.13"]},{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend-module-gitlab","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend-module-gitlab","ranges":["<0.11.10"],"fixed":["0.11.10"]},{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend-module-azure","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend-module-azure","ranges":["<0.2.25"],"fixed":["0.2.25"]},{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend-module-bitbucket-cloud","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend-module-bitbucket-cloud","ranges":["<0.3.10"],"fixed":["0.3.10"]},{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend-module-bitbucket-server","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend-module-bitbucket-server","ranges":["<0.2.25"],"fixed":["0.2.25"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}