openapi-python-client: Malicious OpenAPI Documents can cause Arbitrary Code Generation
Summary
| CVE | CVE-2026-105801 |
|---|---|
| State | PUBLISHED |
| Assigner | GitHub_M |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-06 15:17:17 UTC |
| Updated | 2026-10-06 16:08:43 UTC |
| Description | openapi-python-client generates Python clients from OpenAPI documents. Prior to 0.29.1, the generator does not safely neutralize malicious OpenAPI document content before rendering string, docstring, and f-string contexts in generated Python. The generated Python client can contain attacker-controlled Python that executes when a user imports the client, affecting the importing environment's integrity and potentially its confidentiality and availability. This issue is fixed in version 0.29.1. |
Risk And Classification
Primary CVSS: v4.0 8.4 HIGH from [email protected]
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Problem Types: CWE-94 | CWE-116 | CWE-150 | CWE-94 CWE-94: Improper Control of Generation of Code ('Code Injection') | CWE-116 CWE-116: Improper Encoding or Escaping of Output | CWE-150 CWE-150: Improper Neutralization of Escape, Meta, or Control Sequences
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 8.4 | HIGH | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/E:X/C... |
| 4.0 | CNA | DECLARED | 8.4 | HIGH | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H |
CVSS v4.0 Breakdown
Attack Vector
LocalAttack Complexity
LowAttack Requirements
NonePrivileges Required
NoneUser Interaction
PassiveConfidentiality
NoneIntegrity
HighAvailability
NoneSub Conf.
HighSub Integrity
HighSub Availability
HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Openapi-generators | Openapi-python-client | affected < 0.29.1 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/openapi-generators/openapi-python-client/security/advisories/... | [email protected] | github.com | |
| github.com/openapi-generators/openapi-python-client/commit/1c99af478892e... | [email protected] | github.com | |
| github.com/openapi-generators/openapi-python-client/pull/1483 | [email protected] | github.com | |
| github.com/openapi-generators/openapi-python-client/releases/tag/v0.29.1 | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.