CVE-2026-49471

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Source
https://cve.org/CVERecord?id=CVE-2026-49471
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49471.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-49471
Aliases
Published
2026-07-07T20:50:50Z
Modified
2026-10-21T02:31:03Z
Severity
  • 8.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H CVSS Calculator
Summary
Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-306",
        "CWE-352"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49471.json"
}
References

Affected packages

Git / github.com/oraios/serena

Affected ranges

Type
GIT
Repo
https://github.com/oraios/serena
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
2ee8f100b25c4d8c8c9b416c3175bb4be413a19c
Fixed
016ccbe1c095a3eed7967737ac1d4df2754f5d96
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:oraios-ai:serena:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.5.2"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "range":  [
                {
                    "fixed":  "016ccbe1c095a3eed7967737ac1d4df2754f5d96"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v1.5.2",
            "range":  [
                {
                    "fixed":  "2ee8f100b25c4d8c8c9b416c3175bb4be413a19c"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

Other
2025-04-01
2025-05-19
2025-05-21
2025-06-20
v0.*
v0.1.0
v0.1.1
v0.1.2
v0.1.3
v0.1.4
v1.*
v1.0.0
v1.1.0
v1.1.1
v1.1.2
v1.2.0
v1.5.0
v1.5.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49471.json"