Directory Traversal vulnerability in the storage functionality of the API in Yamcs 5.8.6 allows attackers to delete arbitrary files via crafted HTTP DELETE request.
Yamcs 5.8.6 is vulnerable to directory traversal (issue 1 of 2). The vulnerability is in the storage functionality of the API and allows one to escape the base directory of the buckets, freely navigate system directories, and read arbitrary files.
Yamcs 5.8.6 allows XSS (issue 2 of 2). It comes with a Bucket as its primary storage mechanism. Buckets allow for the upload of any file. There's a way to upload an HTML file containing arbitrary JavaScript and then navigate to it. Once the user opens the file, the browser will execute the arbitrary JavaScript.
Yamcs 5.8.6 allows XSS (issue 1 of 2). It comes with a Bucket as its primary storage mechanism. Buckets allow for the upload of any file. There's a way to upload a display referencing a malicious JavaScript file to the bucket. The user can then open the uploaded display by selecting Telemetry from the menu and navigating to the display.
Yamcs: Insecure Direct Object Reference (IDOR) in PacketsApi allows unprivileged users to dump all telemetry packets
Published 2026-07-16 · Analyzed
4.3EPSS 0.004
Demo
ThreatFusionAI™ Product Walkthrough
The fastest way to see what ThreatFusionAI does is to run a search. Paste any hash, IP, domain or CVE and you'll get the full report, the connected indicators and the actor attribution in one pass.
What you'll see
• Verdicts from multiple antivirus engines
• The connected IOC graph you can click through
• Ranked threat actors based on ATT&CK overlap
Next step
Start with a free search, no card needed. Check the plans if you need more volume.
ThreatFusionAI AssistantAI help & guidance
AI assistant — can make mistakes. Verify important results.