CVE-2023-45279 Yamcs Cross-site Scripting vulnerability

What is CVE-2023-45279?

CVE-2023-45279 is a medium-severity cross-site scripting vulnerability in n/a, published on 19 Oct 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-79

Which versions are affected by CVE-2023-45279?

2 open source packages ship an affected version, including org.yamcs:yamcs. It affects 1 product.

Products include Spaceapplications Yamcs.

How do I fix CVE-2023-45279?

Upgrade org.yamcs:yamcs to 5.8.7 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-45279 being exploited?

There is no known exploitation of CVE-2023-45279 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2026-46562 Yamcs: Remote Code Execution via Mission Database algorithm override Critical 9.8
• CVE-2026-44632 Yamcs: Server-Side Code Injection (RCE) via Janino Expression Engine in `JavaExprAlgorithmExecutionFactory` Critical 9.1
• CVE-2026-46621 Yamcs: Authenticated Remote Code Execution (RCE) via Jython Algorithm Code Injection Critical 9.1
• CVE-2023-45278 Yamcs API Directory Traversal vulnerability Critical 9.1
• CVE-2023-45277 Yamcs Path Traversal vulnerability High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-4cqv-q33x-wfxw.