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Backstage catalog rules can be bypassed for URL locations using encoded path segments

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

Dated risk observations

Risk history is separate from CNA/OSV content history. Daily score drift is retained but only an upward crossing of 10% triggers the prediction change event.

Immutable source observations

10 recorded revisions

Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.

6 Nov 2026 01:44:51 UTC

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…

euvd · EUVD-2026-110054 · Published

4 Nov 2026 02:07:26 UTC

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…

nvd · CVE-2026-115923 · Published

4 Nov 2026 01:00:03 UTC

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…

euvd · EUVD-2026-110054 · Published

2 Nov 2026 18:57:17 UTC

Backstage catalog rules can be bypassed for URL locations using encoded path segments

cve-program · CVE-2026-115923 · Published

2 Nov 2026 00:57:46 UTC

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…

euvd · EUVD-2026-110054 · Published

31 Oct 2026 00:45:55 UTC

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…

euvd · EUVD-2026-110054 · Published

28 Oct 2026 23:57:53 UTC

Backstage catalog rules can be bypassed for URL locations using encoded path segments

euvd · EUVD-2026-110054 · Published

28 Oct 2026 23:57:28 UTC

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…

nvd · CVE-2026-115923 · Published

28 Oct 2026 23:55:37 UTC

Backstage catalog rules can be bypassed for URL locations using encoded path segments

osv · GHSA-w658-mh9p-ww8f · Published

26 Oct 2026 18:35:30 UTC

Backstage catalog rules can be bypassed for URL locations using encoded path segments

cve-program · CVE-2026-115923 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 7 Nov 08:57 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current