@backstage/backend-common
is a common functionality library for backends for Backstage, an open platform for building developer portals. In @backstage/backend-common
prior to versions 0.21.1, 0.20.2, and 0.19.10, paths checks with the resolveSafeChildPath
utility were not exhaustive enough, leading to risk of path traversal vulnerabilities if symlinks can be injected by attackers. This issue is patched in @backstage/backend-common
versions 0.21.1, 0.20.2, and 0.19.10.