PatchSiren cyber security CVE debrief
CVE-2026-47731 NASA-AMMOS CVE debrief
The AMMOS Instrument Toolkit (AIT-Core) is vulnerable to a critical path traversal and arbitrary file append attack due to a lack of proper validation of path-related form fields in the Binary Stream Capture (BSC) component. This issue affects BSC (Binary Stream Capture) and usage of the ait-bsc server, impacting AIT-Core versions before 3.1.1 and 2.x before 2.6.1. The vulnerability allows a remote client to bypass the configured log root and direct BSC to log to arbitrary filesystem paths, allowing for path traversal and arbitrary file append attacks.
- Vendor
- NASA-AMMOS
- Product
- AIT-Core
- CVSS
- CRITICAL 9.1
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-07-21
- Original CVE updated
- 2026-07-22
- Advisory published
- 2026-07-21
- Advisory updated
- 2026-07-22
Who should care
Users of AIT-Core versions prior to 3.1.1 and 2.6.1 should upgrade to the latest version to prevent this vulnerability from being exploited. Affected operators, platforms, vulnerability-management, and security teams should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
Technical summary
The Binary Stream Capture (BSC) component of AIT-Core exposes an unauthenticated HTTP API that allows for dynamic creation of packet capture handlers. Due to the lack of proper validation of path-related form fields, a remote client can bypass the configured log root and direct BSC to log to arbitrary filesystem paths, allowing for path traversal and arbitrary file append attacks. This issue affects AIT-Core versions before 3.1.1 and 2.x before 2.6.1.
Defensive priority
High
Recommended defensive actions
- Upgrade to AIT-Core version 3.1.1 or 2.6.1
- Restrict access to the ait-bsc server
- Monitor for suspicious activity
- Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
- Review compensating controls for exposed systems while remediation is scheduled and verified.
- Check relevant monitoring, detection, and logs for exposed assets that need extra review.
- Track exceptions, retest remediated assets, and close the item only after evidence is documented.
Evidence notes
The CVE record was published on 2026-07-21T22:17:13.230Z and was last modified on 2026-07-22T15:17:18.240Z. The NVD entry is currently under review. Evidence from the CVE record and NVD entry indicates that the AMMOS Instrument Toolkit (AIT-Core) is vulnerable to a critical path traversal and arbitrary file append attack. The Binary Stream Capture (BSC) component of AIT-Core exposes an unauthenticated HTTP API that allows for dynamic creation of packet capture handlers, which can be exploited to bypass the configured log root and direct BSC to log to arbitrary filesystem paths.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-21T22:17:13.230Z and has not been modified since then.