EUVD-2026-80784Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable authenticated TechDocs contributor (PR:L) supplies malicious config with no user interaction; code execution in the build container yields full C/I/A with scope unchanged.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
4DescriptionCVE.org
Backstage is an open framework for building developer portals. Prior to 1.14.6 and from 1.15.0 until 1.15.4, the @backstage/plugin-techdocs-node package insufficiently validates mkdocs.yml supplied by an authenticated user who can register or modify a TechDocs source. Unsafe Python YAML tags, markdown_extensions names and configuration, theme options, and extra_templates values can reach the documentation generator and cause unintended code execution. The resulting impact is limited to the files, credentials, network access, and other resources available to the TechDocs backend or build container. This issue is fixed in versions 1.14.6 and 1.15.4.
AnalysisAI
Authenticated users who can register or modify a TechDocs documentation source can achieve code execution inside the Backstage TechDocs backend or its build container by supplying a crafted mkdocs.yml, because @backstage/plugin-techdocs-node fails to strip unsafe Python YAML tags, markdown_extensions names and their configuration, theme options, and extra_templates values before the file reaches the Python documentation generator. The flaw affects the techdocs-node plugin before 1.14.6 and the 1.15.0 through 1.15.3 range, and the vendor has released fixes in 1.14.6 and 1.15.4. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated user with permission to register or modify a TechDocs documentation source in Backstage, and the TechDocs feature must be deployed with local/native mkdocs generation (the generator must process attacker-supplied mkdocs.yml in the backend or build container). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine, well-calibrated priority for organizations running Backstage TechDocs, though its blast radius is bounded. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade @backstage/plugin-techdocs-node to 1.14.6 or 1.15.4 (or later); the advisory GHSA-292q-8mf5-h6g3 and the linked commits 017ace52d9b327ededc6704cf17799c875ae0f29, 02cd7cdbb18b687446277b5602adaee7f1d53cbb, 25125ee727a3de3418a8fa6a9e458cd5b73ecf26, a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9, and a900a9953c8f7ad3ba1906d1d257725a9996cc9d document the sanitizer changes, and Backstage release tags v1.50.5 and v1.54.6 are referenced for the corresponding platform builds. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every Backstage deployment and its @backstage/plugin-techdocs-node version to identify anything before 1.14.6 or in the 1.15.0-1.15.3 range, temporarily restrict the ability to register or modify TechDocs documentation sources to a small, vetted group, and review recent mkdocs.yml changes for unusual Python YAML tags, markdown_extensions entries, theme options, or extra_templates values. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Wazuh SIEM platform versions 4.4.0 through 4.9.0 contain an unsafe deserialization vulnerability in the DistributedAPI t
BentoML version 1.4.2 and earlier contains an unauthenticated remote code execution vulnerability through insecure deser
pgAdmin 4 contains critical remote code execution vulnerabilities in the Query Tool download and Cloud Deployment endpoi
The renderLocalView function in render/views.py in graphite-web in Graphite 0.9.5 through 0.9.10 uses the pickle Python
BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Rated critica
OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCiph
pyLoad download manager version prior to 0.5.0b3.dev77 exposes the Flask SECRET_KEY through an unauthenticated endpoint.
Langflow (a visual LLM pipeline builder) contains a critical unauthenticated code execution vulnerability (CVE-2026-3301
In Mercurial before 4.1.3, "hg serve --stdio" allows remote authenticated users to launch the Python debugger, and conse
Unauthenticated remote code execution affects Kestra OSS (the open-source event-driven orchestration platform) prior to
Unauthenticated remote code execution in Marimo ≤0.20.4 allows attackers to execute arbitrary system commands via the `/
pyLoad is the free and open-source Download Manager written in pure Python. Rated medium severity (CVSS 5.3), this vulne
Same weakness CWE-20 – Improper Input Validation
View allShare
External POC / Exploit Code
Leaving vuln.today