CVE-2026-38924
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AI Threat Summary
CVE-2026-38924 is a moderate vulnerability with a CVSS score of 2.9 affecting the target software. Threat hunters should monitor for exploit attempts and apply vendor patches immediately.
Description
In Oraios AI Serena before 1.0.0, the listen address of the MCP server in HTTP mode is 0.0.0.0. NOTE: the Supplier observed that 0.0.0.0 was a "potential security hazard" but the Serena documentation, at the time of the issue report proposing 127.0.0.1 instead of 0.0.0.0, recommended "use a sandboxed environment for running Serena."
Attack Chain
Attacker scans for vulnerable versions using version banners or PoC scanners
Attacker triggers CVE-2026-38924 vulnerability with a crafted request or payload
Vulnerability exploited to perform unauthorized actions on the target system
Depending on vulnerability type, attacker achieves data access, service disruption, or code execution
MITRE ATT&CK Techniques
Indicators of Compromise
| Type | Value | Description | |
|---|---|---|---|
| user_agent | Mozilla/5.0 (compatible; exploit/1.0) |
Generic exploit scanner user agent pattern | |
| url | /api/vuln-endpoint?payload=<malicious> |
Exploit attempt against application endpoint — monitor access logs for anomalous params |
Remediation
Quick Facts
| CVE ID | CVE-2026-38924 |
| CVSS Score | 2.9 |
| Vector | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N |
| Published | 2026-09-14 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://dash.security/blog/cve-2026-38924-unauthenticated-rc…
- https://github.com/oraios/serena/commit/a7af5c1f8a9ea27102ea…
- https://github.com/oraios/serena/commit/b00ae292ac2d49947506…
- https://github.com/oraios/serena/compare/v0.1.4...v1.0.0
- https://github.com/oraios/serena/security/advisories/GHSA-m9…
- https://dash.security/blog/cve-2026-38924-unauthenticated-rc…