CVE-2026-106495
mediumpriority · track · 0EPSS 0.002 · 15 %ileUSEPSS · scored 2026-10-27
Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper access control in backend action invocation. An authenticated user could invoke actions that an operator had excluded through action configuration. Existing action permissions and downstream authorization remain enforced. This issue is fixed in version 0.17.8.
cvss
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base score 0–10 · higher = more severe · hover a vector to decode
ssvc
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weaknesses
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affected products (1)
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advisories (1)
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- GHSA-3xr5-8w6c-p5gwBackstage: Improper access control in backend action invocation2026-10-15ghsa · osvUS
### Impact An authenticated user could invoke actions that an operator had excluded through action configuration. Existing action permissions and downstream authorization remain enforced. ### Patches Patched in `@backstage/backend-defaults` version `0.17.8` ### Workarounds Limit access to action invocation endpoints to trusted service callers until upgrading.
sources
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references (3) nvd
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