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Vulnerability record · CVE-2026-106496 · published 6 October 2026

CVE-2026-106496: Path traversal vulnerability

Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent enforcement of allowed location types during catalog processing. Under certain configurations, the catalog backend could process location types that were not intended to be allowed, potentially leading to unintended file access on the backend host. This issue is fixed in version 3.9.1.

3.1 CVSS 3.1 Low EPSS 0.21% · top 89.4% CWE-22 · Path traversalCWE-863 · Incorrect authorization Awaiting Analysis
3.1CVSS 3.1 base score
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
7 Oct 2026Last modified by NVD

Description

Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent enforcement of allowed location types during catalog processing. Under certain configurations, the catalog backend could process location types that were not intended to be allowed, potentially leading to unintended file access on the backend host. This issue is fixed in version 3.9.1.

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

References

LinkTags
https://github.com/backstage/backstage/commit/23774b61560d851bc69cd6a77d12561b24d11afd
https://github.com/backstage/backstage/releases/tag/v1.54.6
https://github.com/backstage/backstage/security/advisories/GHSA-pcmq-25r3-5w9v

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Source: NIST National Vulnerability Database (record CVE-2026-106496), CISA KEV, FIRST EPSS (scores of 2026-10-14). This page is refreshed as NVD updates the record.