EUVD-2026-110054Published
Backstage catalog rules can be bypassed for URL locations using encoded path segments
Explicit identifiers and source references
These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.
CVE-2026-115923 · Microsoft / collected KEV context
cve-program · CVE-2026-115923
- https://github.com/backstage/backstage/security/advisories/GHSA-w658-mh9p-ww8f
- https://github.com/backstage/backstage/commit/3214dc8f15d4a08a2fd07a72a8fe4d00aeac0db4
- https://github.com/backstage/backstage/commit/737ff1c719dbd5a97f375b7f1db6d61416618419
- https://github.com/backstage/backstage/releases/tag/v1.54.10
- https://github.com/backstage/backstage/releases/tag/v1.56.1
euvd · EUVD-2026-110054
- https://github.com/backstage/backstage/security/advisories/GHSA-w658-mh9p-ww8f
- https://github.com/backstage/backstage/commit/3214dc8f15d4a08a2fd07a72a8fe4d00aeac0db4
- https://github.com/backstage/backstage/commit/737ff1c719dbd5a97f375b7f1db6d61416618419
- https://github.com/backstage/backstage/releases/tag/v1.54.10
- https://github.com/backstage/backstage/releases/tag/v1.56.1
nvd · CVE-2026-115923
- https://github.com/backstage/backstage/commit/3214dc8f15d4a08a2fd07a72a8fe4d00aeac0db4
- https://github.com/backstage/backstage/commit/737ff1c719dbd5a97f375b7f1db6d61416618419
- https://github.com/backstage/backstage/releases/tag/v1.54.10
- https://github.com/backstage/backstage/releases/tag/v1.56.1
- https://github.com/backstage/backstage/security/advisories/GHSA-w658-mh9p-ww8f
osv · GHSA-w658-mh9p-ww8f
- https://github.com/backstage/backstage/security/advisories/GHSA-w658-mh9p-ww8f
- https://nvd.nist.gov/vuln/detail/CVE-2026-115923
- https://github.com/backstage/backstage/commit/3214dc8f15d4a08a2fd07a72a8fe4d00aeac0db4
- https://github.com/backstage/backstage/commit/737ff1c719dbd5a97f375b7f1db6d61416618419
- https://github.com/backstage/backstage
- https://github.com/backstage/backstage/releases/tag/v1.54.10
- https://github.com/backstage/backstage/releases/tag/v1.56.1
Related operational evidence
Explicit CVE identifiers- Backstage is an open framework for building developer portals. Prior to 3.9.2 and from 4.0.0 until 4.0.2, DefaultCatalogRulesEnforcer in @backstage/plugin-catalog-backend compares the raw location.target URL against catalog.rules, while URL… · Advisory content revised · 31 Oct 2026
- Backstage catalog rules can be bypassed for URL locations using encoded path segments · Newly collected advisory · 28 Oct 2026
- Backstage catalog rules can be bypassed for URL locations using encoded path segments · Newly collected advisory · 26 Oct 2026