# Backstage vulnerabilities Source: https://junglewise.ai/threats/vendors/backstage Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 12 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/vendors/backstage.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 64 vulnerabilities in Backstage: 0 in the last 7 days and 36 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-115923, was published on 26 October 2026. 2 vulnerabilities in the last four weeks, down 94% on the four before (34). 0 critical against 1. 8 technologies have a page of their own. ## Counts - Last 7 days: 0 - Last 30 days: 1 - Last 90 days: 36 - All time: 64 (1 critical, 0 exploited in the wild) ## About Backstage An open platform for building developer portals and internal developer platforms. ## Latest Backstage vulnerabilities - [CVE-2026-115923: Backstage catalog URL validation bypass](https://junglewise.ai/threats/cve-2026-115923-backstage-is-an-open-framework-for-building-developer-portals) (medium, CVSS 6.5, published 26 Oct 2026) - [CVE-2026-106495: Backstage backend-defaults improper access control in action invocation](https://junglewise.ai/threats/cve-2026-106495-backstage-improper-access-control-in-backend-action-invocation) (medium, CVSS 4.3, published 12 Oct 2026) - [CVE-2026-106510: Backstage TechDocs remote code execution via mkdocs.yml](https://junglewise.ai/threats/cve-2026-106510-backstage-remote-code-execution-via-crafted-markdown-extensions) (high, CVSS 7.7, published 7 Oct 2026) - [CVE-2026-106558: Backstage plugin-techdocs-node code execution in MkDocs configuration](https://junglewise.ai/threats/cve-2026-106558-backstage-improper-validation-of-techdocs-mkdocs-configuration) (high, CVSS 8.8, published 7 Oct 2026) - [CVE-2026-106557: Backstage improper input validation in TechDocs Markdown extension](https://junglewise.ai/threats/cve-2026-106557-backstage-has-improper-input-validation-in-techdocs-markdown) (high, CVSS 7.7, published 7 Oct 2026) - [CVE-2026-106563: Backstage improper entity validation in Kubernetes services endpoint](https://junglewise.ai/threats/cve-2026-106563-backstage-improper-entity-validation-in-deprecated-kubernetes) (medium, CVSS 5.3, published 7 Oct 2026) - [CVE-2026-106562: Backstage incorrect authorization in search engine permission filtering](https://junglewise.ai/threats/cve-2026-106562-backstage-has-incorrect-authorization-in-search-engine) (medium, CVSS 4.3, published 7 Oct 2026) - [CVE-2026-106561: Backstage Kubernetes plugin sensitive information disclosure in resource queries](https://junglewise.ai/threats/cve-2026-106561-backstage-has-a-sensitive-information-disclosure-in-kubernetes) (medium, CVSS 5, published 7 Oct 2026) - [CVE-2026-106560: Backstage plugin-scaffolder-backend-module-confluence-to-markdown path traversal](https://junglewise.ai/threats/cve-2026-106560-backstage-improper-repository-path-validation-in-a-scaffolder) (high, CVSS 7.1, published 7 Oct 2026) - [CVE-2026-106559: Backstage Confluence to Markdown scaffolder input validation bypass](https://junglewise.ai/threats/cve-2026-106559-backstage-improper-input-validation-in-confluence-to-markdown) (medium, CVSS 6.3, published 7 Oct 2026) - [CVE-2026-106508: Backstage TechDocs local publisher path traversal](https://junglewise.ai/threats/cve-2026-106508-backstage-is-an-open-framework-for-building-developer-portals) (medium, CVSS 5.3, published 6 Oct 2026) - [CVE-2026-106507: Backstage plugin-techdocs-node arbitrary file read in mkdocs snippets](https://junglewise.ai/threats/cve-2026-106507-backstage-is-an-open-framework-for-building-developer-portals) (medium, CVSS 5.3, published 6 Oct 2026) - [CVE-2026-106505: Backstage plugin-techdocs-node MkDocs config sanitizer bypass](https://junglewise.ai/threats/cve-2026-106505-backstage-is-an-open-framework-for-building-developer-portals) (high, CVSS 7.7, published 6 Oct 2026) - [CVE-2026-106504: Backstage scaffolder-backend sensitive information exposure in task logs](https://junglewise.ai/threats/cve-2026-106504-backstage-is-an-open-framework-for-building-developer-portals) (medium, CVSS 6.5, published 6 Oct 2026) - [CVE-2026-106503: Backstage Scaffolder Backend authorization bypass in action input validation](https://junglewise.ai/threats/cve-2026-106503-backstage-is-an-open-framework-for-building-developer-portals) (high, CVSS 8.1, published 6 Oct 2026) - [CVE-2026-106502: Backstage plugin-scaffolder-backend credential exposure in task events](https://junglewise.ai/threats/cve-2026-106502-backstage-is-an-open-framework-for-building-developer-portals) (medium, CVSS 5.3, published 6 Oct 2026) - [CVE-2026-106501: Backstage plugin-scaffolder-backend sensitive information exposure](https://junglewise.ai/threats/cve-2026-106501-backstage-is-an-open-framework-for-building-developer-portals) (critical, CVSS 9.6, published 6 Oct 2026) - [CVE-2026-106500: Backstage plugin-scaffolder-backend improper task state validation](https://junglewise.ai/threats/cve-2026-106500-backstage-is-an-open-framework-for-building-developer-portals) (high, CVSS 8.5, published 6 Oct 2026) - [CVE-2026-106498: Backstage catalog entity placeholder URL validation bypass](https://junglewise.ai/threats/cve-2026-106498-backstage-is-an-open-framework-for-building-developer-portals) (high, CVSS 7.7, published 6 Oct 2026) - [CVE-2026-106497: Backstage plugin-catalog-backend permission evaluation bypass](https://junglewise.ai/threats/cve-2026-106497-backstage-is-an-open-framework-for-building-developer-portals) (medium, CVSS 4.3, published 6 Oct 2026) - [CVE-2026-106494: Backstage backend-defaults path traversal in cloud storage URL readers](https://junglewise.ai/threats/cve-2026-106494-backstage-is-an-open-framework-for-building-developer-portals) (medium, CVSS 4.4, published 6 Oct 2026) - [CVE-2026-106492: Backstage backend-defaults service credential delegation bypass](https://junglewise.ai/threats/cve-2026-106492-backstage-is-an-open-framework-for-building-developer-portals) (high, CVSS 7.6, published 6 Oct 2026) - [CVE-2026-106491: Backstage proxy-backend improper input validation](https://junglewise.ai/threats/cve-2026-106491-backstage-is-an-open-framework-for-building-developer-portals) (medium, CVSS 6.4, published 6 Oct 2026) - [CVE-2026-106490: Backstage plugin-techdocs-backend path validation in Azure Blob Storage](https://junglewise.ai/threats/cve-2026-106490-backstage-is-an-open-framework-for-building-developer-portals) (medium, CVSS 6.5, published 6 Oct 2026) - [CVE-2026-106489: Backstage TechDocs authorization bypass in content access](https://junglewise.ai/threats/cve-2026-106489-backstage-is-an-open-framework-for-building-developer-portals) (medium, CVSS 6.5, published 6 Oct 2026) ## Most severe Backstage vulnerabilities - [CVE-2026-106501: Backstage plugin-scaffolder-backend sensitive information exposure](https://junglewise.ai/threats/cve-2026-106501-backstage-is-an-open-framework-for-building-developer-portals) (critical, CVSS 9.6, published 6 Oct 2026) - [CVE-2026-88064: Backstage TechDocs YAML injection in mkdocs configuration](https://junglewise.ai/threats/cve-2026-88064-backstage-techdocs-yaml-injection-in-mkdocs-configuration) (high, CVSS 8.8, published 16 Sep 2026) - [CVE-2026-106558: Backstage plugin-techdocs-node code execution in MkDocs configuration](https://junglewise.ai/threats/cve-2026-106558-backstage-improper-validation-of-techdocs-mkdocs-configuration) (high, CVSS 8.8, published 7 Oct 2026) - [CVE-2026-106500: Backstage plugin-scaffolder-backend improper task state validation](https://junglewise.ai/threats/cve-2026-106500-backstage-is-an-open-framework-for-building-developer-portals) (high, CVSS 8.5, published 6 Oct 2026) - [CVE-2026-106486: Backstage Scaffolder Bitbucket path traversal in pull request actions](https://junglewise.ai/threats/cve-2026-106486-backstage-is-an-open-framework-for-building-developer-portals) (high, CVSS 8.5, published 6 Oct 2026) - [CVE-2026-106459: Backstage Sentry scaffolder improper input validation](https://junglewise.ai/threats/cve-2026-106459-backstage-is-an-open-framework-for-building-developer-portals) (high, CVSS 8.5, published 6 Oct 2026) - [CVE-2026-106503: Backstage Scaffolder Backend authorization bypass in action input validation](https://junglewise.ai/threats/cve-2026-106503-backstage-is-an-open-framework-for-building-developer-portals) (high, CVSS 8.1, published 6 Oct 2026) - [CVE-2026-106488: Backstage OIDC provider authentication bypass via unverified email](https://junglewise.ai/threats/cve-2026-106488-backstage-is-an-open-framework-for-building-developer-portals) (high, CVSS 8.1, published 6 Oct 2026) - [CVE-2026-29186: Backstage TechDocs arbitrary code execution via MkDocs configuration bypass](https://junglewise.ai/threats/cve-2026-29186-backstage-techdocs-arbitrary-code-execution-via-mkdocs) (high, CVSS 7.7, published 7 Mar 2026) - [CVE-2026-25153: Backstage TechDocs code execution via MkDocs hooks configuration](https://junglewise.ai/threats/cve-2026-25153-backstage-techdocs-code-execution-via-mkdocs-hooks-configuration) (high, CVSS 7.7, published 30 Jan 2026) ## Vulnerabilities per week 2 vulnerabilities in the last four weeks, down 94% on the four before (34). 0 critical against 1. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 1 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 33 | 1 | 0 | | 12 Oct 2026 | 1 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 1 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Backstage technologies - [Backstage Plugin-Scaffolder-Backend](https://junglewise.ai/threats/technologies/plugin-scaffolder-backend): 10 vulnerabilities - [Backstage Plugin-Techdocs-Node](https://junglewise.ai/threats/technologies/plugin-techdocs-node): 10 vulnerabilities - [Backstage Backend-Defaults](https://junglewise.ai/threats/technologies/backend-defaults): 5 vulnerabilities - [Backstage Plugin-Auth-Backend](https://junglewise.ai/threats/technologies/plugin-auth-backend): 4 vulnerabilities - [Backstage Catalog Backend Plugin](https://junglewise.ai/threats/technologies/plugin-catalog-backend): 4 vulnerabilities - [Backstage Plugin-Techdocs-Backend](https://junglewise.ai/threats/technologies/plugin-techdocs-backend): 4 vulnerabilities - [Backstage Scaffolder Backend Plugin](https://junglewise.ai/threats/technologies/scaffolder-backend-plugin): 3 vulnerabilities - [Backstage TechDocs](https://junglewise.ai/threats/technologies/techdocs): 3 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Backstage vulnerabilities", https://junglewise.ai/threats/vendors/backstage, 12 November 2026.