要点
- CVE-2026-106494 は backstage (linuxfoundation), backstage/backend defaults (linuxfoundation), @backstage/backend-defaults に影響する深刻度「中」 (CVSS 4.9) の脆弱性です。
- 今後30日間に悪用される確率(EPSS):0.31%(全脆弱性の 23.4% より高い)。
- 対処:1.54.6, 0.17.8 以降に更新してください。
概要
Impact
An attacker with write access to a cloud storage bucket used by Backstage could craft object names that could collide with protected files in the output directory. In certain deployment configurations, this could lead to content injection.
Patches
Patched in @backstage/backend-defaults version 0.17.8
NVD の説明
Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper input validation in cloud storage url readers. An attacker with write access to a cloud storage bucket used by Backstage could craft object names that could collide with protected files in the output directory. In certain deployment configurations, this could lead to content injection. This issue is fixed in version 0.17.8.
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