CVE-2026-106491
Backstage is an open framework for building developer portals. Prior to 0.6.17, the @backstage/plugin-proxy-backend package is affected by i
CVSS
6.4
Medio
EPSS
0.3%
p19
KEV
—
Exploit Today
6
0-100
Publicado: 6 oct 2026 · Última mod.: 22 oct 2026 · CWE-20 · CWE-22
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 forward the request to a path outside the configured base path on the target server. This is limited to target servers already configured as proxy endpoints and requires Backstage authentication by default. This issue is fixed in version 0.6.17.