CVE-2026-106493

Backstage: Cloud storage catalog locations may cross configured storage boundaries

CVSS score

3.0

EPSS probability

%0.3

Risk score

0.0

Published

5 d ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

DayBreach CVE AI Research

CVE-2026-106493 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

Backstage is an open framework for building developer portals. Prior to 1.54.6, cloud storage catalog providers did not sufficiently validate object paths. A principal able to create or rename objects in a configured Azure Blob Storage or AWS S3 catalog source could cause catalog descriptors to be read from outside the intended storage boundary, limited to locations reachable with the backend's configured credentials. This issue is fixed in 1.54.6.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-106493 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	backstage	backstage	View
2	backstage	plugin-catalog-backend-module-azure	View
3	backstage	plugin-catalog-backend-module-aws	View
4	backstage	plugin-catalog-backend-module-azure	View
5	npm	@backstage/plugin-catalog-backend-module-azure	View
6	npm	@backstage/plugin-catalog-backend-module-aws	View
7	npm	@backstage/backend-defaults	View

Total affected vendors: 2|Products: 7

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
3.0	CVSS V3_1	LOW	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N	CVE CNA
3.0	CVSS 3.x	—	Vector not published	GitHub Advisory
3.0	CVSS V31	LOW	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N	NVD
0.0	CVSS 4.0	—	Vector not published	GitHub Advisory

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

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Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-106493 is associated with the following CWEs:

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-106493 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsHigh

UserGerekmiyor

Official Sources and Advisories

https://github.com/backstage/backstage/security/advisories/GHSA-xvh9-35w9-42m4vendor-advisory https://github.com/backstage/backstage/commit/47ddbd8b4a3efd812309f759c38f4877fbd9e5ffvendor-advisory https://github.com/backstage/backstage/releases/tag/v1.54.6vendor-advisory https://nvd.nist.gov/vuln/detail/CVE-2026-106493vendor-advisory https://github.com/advisories/GHSA-xvh9-35w9-42m4vendor-advisory

CVSS Vector Radar Chart

3.0 / 10

Vulnerability Scoring Details

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

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredHigh privileges

User InteractionNone required

Confidentiality (Gizlilik)High

Integrity (Bütünlük)None

Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

backstage

npm

Weakness Type (CWE & CAPEC)

CWE-22

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