CVE-2026-106498 (GCVE-0-2026-106498)
Vulnerability from cvelistv5
Published
2026-10-06 21:23
Modified
2026-10-09 01:55
Severity ?
VLAI Severity ?
EPSS score ?
Summary
Backstage is an open framework for building developer portals. Prior to 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1, the @backstage/plugin-catalog-backend package is affected by improper url validation in catalog entity placeholder resolution. An authenticated Backstage user could craft a catalog entity with placeholder directives that reference resources outside the entity's source repository. Under certain configurations, this could allow access to data not intended to be available to the user. This issue is fixed in versions 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| backstage | backstage |
Version: < 1.49.6 Version: >= 1.50.0-next.0, < 1.50.5 Version: >= 1.51.0-next.0, < 1.51.3 Version: >= 1.52.0-next.0, < 1.53.2 Version: >= 1.54.0-next.0, < 1.54.6 |
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|
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"title": "Backstage: Improper URL validation in catalog entity placeholder resolution"
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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