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Vulnerabilities/CVE-2026-106455Public Intelligence Dossier
Source: linuxfoundation · Limited verification•Last verified: •Collection Degraded
CVE-2026-106455Unknown / EvaluatingHIGH (raw)CVSS 7.7CWE-918

Backstage is an open framework for building developer portals

Published: 07 Oct 2026•Last updated: 13 Oct 2026, 08:57 PM IST•Source identifier: security-advisories@github.com
Dossier completeness: source-provided sections 2 / 3 · rule guidance available. Missing source facts count as incomplete.
Official source
CISA KEV catalog
Unknown
KEV status was not determined.
CVSS score
7.7HIGH (raw)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Metric sourcesecurity-advisories@github.com
EPSS probability
0.3%0.003
Percentile25th
Weakness type
CWE-918
No further CWE recorded
Remediation
Patch status unknown
No fixed version or KB recorded

Why It Matters

Analysis dossier

Why It Matters

Backstage is an open framework for building developer portals. From 0.11.12 until 1.14.7 and 1.15.5, the @backstage/plugin-techdocs-node package is affected by improper validation of mkdocs plugin configuration in techdocs. An authenticated attacker with control over a TechDocs source repository could cause a documentation build to retrieve and publish data from network locations reachable by the build environment. Exposure depends on deployment topology, build mode, and target endpoint protections. Modern cloud metadata services that require tokens or special headers are not directly accessible through the affected behavior. This issue is fixed in @backstage/plugin-techdocs-node versions 1.14.7 and 1.15.5.

SOC priority

High

Actively exploited

Unknown

Publicly disclosed

Unknown

Risk basis: SOC ecosystem technology relevance; HIGH severity; No confirmed exploitation signal in current enrichment

Affected Products & Remediation

2 source-backed products
Affected products and versions (source)
  • linuxfoundation backstage plugin-techdocs-node · >= 0.11.12 < 1.14.7; >= 1.15.0 < 1.15.5 · NVD CPE · Source
  • linuxfoundation backstage · plugin-techdocs-node >= 0.11.12 < 1.14.7; plugin-techdocs-node >= 1.15.0 < 1.15.5; >= 0.71.1 < 1.50.6; >= 1.51.1 < 1.54.8; 1.51.0 · NVD CPE · Source
Recorded patch / KBNot provided by source

Vendor or catalog guidance (source)

Not provided by source

Known exploitation (source facts)

Only what a source states. Unknown means no source has said either way; it is not "not exploited".

CISA KEV
Unknown
Exploited (source statement)
Unknown
Publicly disclosed (source)
Unknown

Suggested hunting (rule-based inference)

SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.

Matched ssrf (CWE-918)

Exposure

  1. Identify affected server-side request features and deployed versions.Telemetry: Application inventory · The specific feature must be confirmed from the advisory. · Rule ssrf

Exploitation evidence

  1. Review unusual outbound connections from the affected service to internal or metadata endpoints.Telemetry: DeviceNetworkEvents · Outbound patterns can support SSRF hunting. · Rule ssrf

Response

  1. Verify the vendor fix and confirm expected egress after deployment.Telemetry: DeviceNetworkEvents · Post-change telemetry helps validate mitigation. · Rule ssrf

CISA KEV Record

CISA KEV status was not determined for this record.

Change History & Source Data

— No recorded material change

CNA / source
security-advisories@github.com
Record status · verification
UPDATED · NVD API
CPE
cpe:2.3:a:linuxfoundation:backstage_plugin-techdocs-node:*:*:*:*:*:*:*:*, cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*, cpe:2.3:a:linuxfoundation:backstage:1.51.0:-:*:*:*:*:*:*, cpe:2.3:a:linuxfoundation:backstage:1.51.0:next0:*:*:*:*:*:*, cpe:2.3:a:linuxfoundation:backstage:1.51.0:next1:*:*:*:*:*:*, cpe:2.3:a:linuxfoundation:backstage:1.51.0:next2:*:*:*:*:*:*, cpe:2.3:a:linuxfoundation:backstage:1.51.0:next3:*:*:*:*:*:*

Evidence & Provenance

3 public sources
github.comSource recordnvd.nist.govSource recordgithub.comSource record

Linked by the query's stored exact CVE association. Review required tables and validation status before use.

Detection Hunting Query
Target: DeviceTvmSoftwareVulnerabilities•Defender XDR
Detect endpoints exposed to CVE-2026-106455
Purpose: Exposure assessment (Category: Exposure Check)Why linked: Query metadata names CVE-2026-106455
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2026-106455"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel desc
Schema Checked · Not runtime validatedSource: SecOps Signal deterministic template · Limited verificationStatic screening: Passed structure and schema checks; tenant execution is not verified.
Open KQL Library

Correlated briefings

— No published briefing references this CVE

SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.