CVE-2026-106486High· 8.5▾ TwilightBackstage 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-…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 46.8 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 7.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.3%
0.3% → 0.4%
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
@backstage/plugin-scaffolder-backend-module-bitbucket-cloud < 0.3.10@backstage/plugin-scaffolder-backend-module-bitbucket-server < 0.2.25Patched in:
@backstage/plugin-scaffolder-backend-module-bitbucket-cloud 0.3.10@backstage/plugin-scaffolder-backend-module-bitbucket-server 0.2.25Source: https://github.com/advisories/GHSA-g8rx-f7m5-7794
Connected by shared product, vendor, weakness, or advisory.
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