EUVD-2026-110054Published

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

cve-program · CVE-2026-115923

Published

backstage

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "backstage",
                    "product": "backstage",
                    "versions": [
                        {
                            "version": "< 3.9.2",
                            "status": "affected"
                        },
                        {
                            "version": ">= 4.0.0, < 4.0.2",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-110054

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Oct 26, 2026, 5:56:20 PM

dateUpdated: Nov 2, 2026, 5:52:00 PM

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-115923

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Awaiting Analysis

Weakness classifications: CWE-22

Original publisher date fields

published: 2026-10-26T18:17:40.360

lastModified: 2026-11-02T18:18:39.190

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-w658-mh9p-ww8f

Published

@backstage/plugin-catalog-backend

npm

SEMVER · introduced 0 → fixed 3.9.2

@backstage/plugin-catalog-backend

npm

SEMVER · introduced 4.0.0 → fixed 4.0.2

Original source record · Cite this exact observation · Complete original publisher JSON