2.9Low
CVE-2026-38924
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."
What this means for your business
- An attacker can use it only with access to the machine itself, without a login, and without anyone at your company clicking anything.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
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Scoring
- CVSS
- 2.9 (v3.1)
- Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N- Weakness
- CWE-669
- Assigned by
- cve@mitre.org
Dates
- Published
- 2026-09-14
- Last modified
- 2026-09-14
- Sources
- NVD
References
- https://dash.security/blog/cve-2026-38924-unauthenticated-rce-in-the-serena-mcp-server
- https://github.com/oraios/serena/commit/a7af5c1f8a9ea27102eac9e72f64dd97dbfefff3
- https://github.com/oraios/serena/commit/b00ae292ac2d49947506886f44eb1cad7b7d7cd1
- https://github.com/oraios/serena/compare/v0.1.4...v1.0.0
- https://github.com/oraios/serena/security/advisories/GHSA-m922-r24v-6wff
- https://dash.security/blog/cve-2026-38924-unauthenticated-rce-in-the-serena-mcp-server