Backstage is an open framework for building developer portals. Prior to 0.6.17, the @backstage/plugin-proxy-backend package is affected by improper input validation in proxy-backend. An authenticated Backstage user could craft a request URL that causes the proxy-backend to forwar...
Product
backstage plugin-proxy-backend vulnerabilities
2 published CVES affecting backstage plugin-proxy-backend, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 2
- Critical
- 0
- High
- 0
- Medium
- 2
- Low
- 0
- Unscored
- 0
- CISA KEV
- 0
Latest backstage plugin-proxy-backend CVEs
Newest publication first
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MediumCVSS 6.4 EPSS 0.27%
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CVE-2026-106456 Backstage: Inconsistent credential enforcement for overlapping proxy routes
PublishedMediumCVSS 6.5 EPSS 0.24%Backstage is an open framework for building developer portals. From 0.5.0 until 0.6.18, the @backstage/plugin-proxy-backend package is affected by inconsistent credential enforcement for overlapping proxy routes. An operator can configure overlapping proxy paths with different cr...
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.