CSRF in Oraios Serena
CVE-2026-49471
Serena is a powerful MCP toolkit for coding that provides semantic retrieval and editing capabilities. Prior to v1.5.2, Serena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port, with no authentication, no CSRF protection, and no Host header validation. A DNS rebinding attack allows a malicious webpage to reach this API from any browser and write arbitrary content to the agent's persistent memory store, which the agent reads and acts on autonomously. Combined with execute_shell_command using shell=True, this creates a remote code execution chain requiring only that the victim visit a malicious webpage while Serena is running. This issue is fixed in version v1.5.2.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (28.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Oraios Serena — versions < 1.5.2
- Oraios-Ai Serena
Weakness classification (CWE)
References
- github.com/oraios/serena/security/advisories/GHSA-37h2-6p4f-mp3q (Exploit, Third Party Advisory)
- github.com/oraios/serena/commit/016ccbe1c095a3eed7967737ac1d4df2754f5d96 (Patch)
- github.com/oraios/serena/releases/tag/v1.5.2 (Release Notes)
Frequently asked questions
- What is CVE-2026-49471?
- CVE-2026-49471 is a high-severity vulnerability in Oraios Serena, classified under Missing Authentication for Critical Function. CVSS score: 8.3/10. Published 2026-07-07.
- How severe is CVE-2026-49471?
- High severity. CVSS v3 base score is 8.3 out of 10.