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Python CVE-2026-54621

| EUVDEUVD-2026-50072 HIGH
Code Injection (CWE-94)
2026-07-28 GitHub_M GHSA-j884-q54q-mmx3
RCE Python Code Injection Datamodel Code Generator Koxudaxi
7.8
CVSS 3.1 · Vendor: GitHub_M
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Vulnerability Assessment

Weakness
CWE
CWE-94
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Code injection prevention, sandbox exec
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 28, 2026

Code injection in datamodel-code-generator versions before 0.60.1 allows an attacker who provides a malicious GraphQL schema to execute arbitrary Python code when a developer generates and imports the resulting model. The flaw exists because carriage return (\r) characters in Union type descriptions are not neutralized before being placed inside Python line comments, letting the rest of the description escape the comment and run as module‑level code upon import. A fix is available in version 0.60.1; no active exploitation is reported, and no public exploit is known.

Affected VersionsENISA

datamodel-code-generator 0.25.0, < 0.60.1

Affected Packages

pypi datamodel-code-generator fix: 0.60.1

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in pypi

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

Vendor (GitHub_M) PRIMARY 7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from Vendor (GitHub_M) · only source for this CVE.

CVSS VectorVendor: GitHub_M

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Patch available
Jul 28, 2026 - 23:02 EUVD
CVE Published
Jul 28, 2026 - 21:35 cve.org
HIGH 7.8

DescriptionCVE.org

datamodel-code-generator generates Python data models from schema definitions. Prior to 0.60.1, GraphQL Union description values in src/datamodel_code_generator/model/template/UnionTypeStatement.jinja2 and src/datamodel_code_generator/model/template/UnionTypeStatement.py312.jinja2 are rendered into Python comments without neutralizing carriage returns in Python

comments, allowing attacker-controlled GraphQL schema content to inject Python code into generated models that runs when imported. This issue is fixed in version 0.60.1.

Articles & Coverage 2

News 11 New Python Vulnerabilities - 0 Critical, 11 High Jul 29, 2026 News 11 New Python Vulnerabilities - 0 Critical, 11 High Jul 28, 2026

Threat Intelligence Overview

EPSS Score
0.1%
Top 96% exploitable
Threat Intel
1
1 sources
Social Media
1
Sightings
Data Quality
6 sources
Confidence: High
EUVD NVD CVE.org EPSS Vulnrichment GHSA CIRCL GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.1%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact· derived
Medium
Technical Impact
Total

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +39
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

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References

Advisories & patches
REF https://github.com/koxudaxi/datamodel-code-generator/commit/aec47bc414779f4a9992b3919c8f7663afd6c988 REF https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.1 REF https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-j884-q54q-mmx3

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