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Vulnerabilities / CVE-2026-106486

critical

CVE-2026-106486

plugin-scaffolder-backend-module-bitbucket-cloud: plugin-scaffolder-backend-module-bitbucket-server: Backstage: Unauthorized file manipulation via Bitbucket pull-request Scaffolder actions

Published Modified CWE 22, 59
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GHSA8.6CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Red Hat8.5CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by GHSA (high), Red Hat (high).

Description

Backstage is an open framework for building developer portals. Prior to 0.3.10 in @backstage/plugin-scaffolder-backend-module-bitbucket-cloud and 0.2.25 in @backstage/plugin-scaffolder-backend-module-bitbucket-server, the Bitbucket pull-request Scaffolder actions did not sufficiently validate filesystem paths. An authenticated user who can execute an eligible template and influence an allowed Bitbucket repository could affect paths outside the expected working area, potentially compromising backend confidentiality, integrity, or availability. This issue is fixed in @backstage/plugin-scaffolder-backend-module-bitbucket-cloud 0.3.10 and @backstage/plugin-scaffolder-backend-module-bitbucket-server 0.2.25.

Affected packages and fixed versions

SourcePackageFixed in
npm::GitHub Security Advisory npm@backstage/plugin-scaffolder-backend-module-bitbucket-cloud, @backstage/plugin-scaffolder-backend-module-bitbucket-server0.3.10 and 1 more
Show all 2 entries from 1 source
SourcePackageFixed in
npm::GitHub Security Advisory npm@backstage/plugin-scaffolder-backend-module-bitbucket-cloud0.3.10
npm::GitHub Security Advisory npm@backstage/plugin-scaffolder-backend-module-bitbucket-server0.2.25

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.