CVE-2026-107292

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Source
https://cve.org/CVERecord?id=CVE-2026-107292
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107292.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-107292
Aliases
Published
2026-10-08T16:26:48Z
Modified
2026-10-09T02:52:04Z
Severity
  • 6.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L CVSS Calculator
Summary
Pydantic AI Web chat UI (`Agent.to_web()`, `clai web`): the local chat endpoint does not validate the `Host` header
Details

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.34.0 until 2.30.0, the Agent.to_web() and clai web development chat server does not validate the Host header, allowing a website visited by a developer to use DNS rebinding to reach a loopback-hosted agent as a same-origin service. The hostile page can read the served UI and submit chat requests that execute agent tools with the local process's privileges and credentials, causing data disclosure or unwanted side effects. Binding to localhost, Origin checks, and CSRF tokens do not prevent the same-origin DNS rebinding path. This issue is fixed in versions 1.107.5 and 2.30.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-346",
        "CWE-350"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107292.json"
}
References

Affected packages

Git / github.com/pydantic/pydantic-ai

Affected ranges

Type
GIT
Repo
https://github.com/pydantic/pydantic-ai
Events
Introduced
afde1c431371ce24757179ed1cad09af0f382d29
Fixed
6001a4549018ad5509f2c11ed6c38d2385159506
Introduced
6001a4549018ad5509f2c11ed6c38d2385159506
Fixed
c24a9008a8fbd752ddf02870c7c4b3a518dbd8c9
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "1.34.0"
        },
        {
            "fixed": "2.0.0b1"
        },
        {
            "introduced": "2.0.0b1"
        },
        {
            "fixed": "2.30.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v1.*
v1.100.0
v1.101.0
v1.102.0
v1.103.0
v1.104.0
v1.105.0
v1.106.0
v1.107.0
v1.34.0
v1.35.0
v1.36.0
v1.37.0
v1.38.0
v1.39.0
v1.39.1
v1.40.0
v1.41.0
v1.42.0
v1.43.0
v1.44.0
v1.45.0
v1.46.0
v1.47.0
v1.48.0
v1.49.0
v1.50.0
v1.51.0
v1.52.0
v1.53.0
v1.54.0
v1.55.0
v1.56.0
v1.57.0
v1.58.0
v1.59.0
v1.60.0
v1.61.0
v1.62.0
v1.63.0
v1.64.0
v1.65.0
v1.66.0
v1.67.0
v1.68.0
v1.69.0
v1.70.0
v1.72.0
v1.73.0
v1.74.0
v1.75.0
v1.76.0
v1.77.0
v1.78.0
v1.79.0
v1.80.0
v1.81.0
v1.82.0
v1.83.0
v1.84.0
v1.84.1
v1.85.0
v1.85.1
v1.86.0
v1.86.1
v1.87.0
v1.88.0
v1.89.0
v1.89.1
v1.90.0
v1.91.0
v1.92.0
v1.93.0
v1.94.0
v1.95.0
v1.95.1
v1.96.0
v1.96.1
v1.97.0
v1.98.0
v1.99.0
v2.*
v2.0.0
v2.1.0
v2.10.0
v2.11.0
v2.12.0
v2.13.0
v2.14.0
v2.14.1
v2.15.0
v2.16.0
v2.17.0
v2.18.0
v2.19.0
v2.2.0
v2.20.0
v2.21.0
v2.22.0
v2.23.0
v2.24.0
v2.25.0
v2.26.0
v2.27.0
v2.27.1
v2.28.0
v2.29.0
v2.3.0
v2.4.0
v2.5.0
v2.5.1
v2.6.0
v2.7.0
v2.8.0
v2.9.0
v2.9.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107292.json"