CVE-2024-36039: Pymysql SQL Injection Vulnerability

CRITICAL
Advisory Identifier: GHSA-v9hf-5j83-6xpp
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CVSS 9.8
CWE-89
Published
Advisory Summary

CVE-2024-36039 is a CRITICAL (CVSS 9.8) sql injection vulnerability (CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')) affecting Pymysql libraries in the PyPI ecosystem. The issue involves pymysql sql injection vulnerability. Remediation is available by upgrading affected packages to version 1.1.1.

CVE-2024-36039 at a Glance

CVE Identifier CVE-2024-36039
GHSA Identifier GHSA-v9hf-5j83-6xpp
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Affected Product Pymysql
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2024-36039

To remediate this vulnerability, upgrade all affected Pymysql dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

pymysql fixed: 1.1.1 
pip install pymysql>=1.1.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show pymysql

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-36039, inspect your installed packages using pip:

pip show pymysql

Analyze the terminal output to locate any version of Pymysql in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.1.1), your application is affected.

Note: The pip show pymysql command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'), where the product constructs all or part of an sql command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended sql command when it is sent to a downstream component. without sufficient removal or quoting of sql syntax in user-controllable inputs, the generated sql query can cause those inputs to be interpreted as sql instead of ordinary user data. In Pymysql, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

PyMySQL through 1.1.0 allows SQL injection if used with untrusted JSON input because keys are not escaped by `escape_dict`.

CVE-2024-36039 Affected Pymysql Versions

1 component(s)
Fixed Versions:
1.1.1
Product / Package Ecosystem Affected Versions Fixed Version
pymysql
pypi/pymysql
PyPI
< 1.1.1
1.1.1

References

NVD — CVE-2024-36039 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-36039
Security Fix Commit FIX COMMIT
https://github.com/PyMySQL/PyMySQL/commit/521e40050cb386a499f68f483fefd144c493053c
Pymysql Source Repository REPOSITORY
https://github.com/PyMySQL/PyMySQL
Pymysql Release RELEASE
https://github.com/PyMySQL/PyMySQL/releases/tag/v1.1.1
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2024/05/msg00017.html
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/23VXBV34GFRICCVYZ6KFMSSWY5UEXCF5
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/35VOJS3SRJNLQIO7YTZFNM6RWHIHWTMK

Frequently Asked Questions

What is CVE-2024-36039?
CVE-2024-36039 is a security vulnerability in Pymysql involving PyMySQL SQL Injection vulnerability under CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection').
Which Pymysql versions are affected?
Affected versions include releases prior to 1.1.1 across affected packages: pymysql.
What version fixes CVE-2024-36039?
Upgrading to 1.1.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pymysql affected?
Yes, pymysql is affected in releases prior to 1.1.1. Upgrade your dependency to 1.1.1 or later.
What is the CVSS score of CVE-2024-36039?
CVE-2024-36039 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2024-36039?
CVE-2024-36039 is classified under CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') (The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.).
How can I check PyPI dependencies for CVE-2024-36039?
Run the dependency tree command: 'pip show pymysql'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-v9hf-5j83-6xpp",
  "modified" : "2024-06-24T09:30:52Z",
  "published" : "2024-05-21T18:31:23Z",
  "aliases" : [ "CVE-2024-36039" ],
  "summary" : "PyMySQL SQL Injection vulnerability",
  "details" : "PyMySQL through 1.1.0 allows SQL injection if used with untrusted JSON input because keys are not escaped by `escape_dict`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "pymysql"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.1.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-36039"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/PyMySQL/PyMySQL/commit/521e40050cb386a499f68f483fefd144c493053c"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/PyMySQL/PyMySQL"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/PyMySQL/PyMySQL/releases/tag/v1.1.1"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2024/05/msg00017.html"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/23VXBV34GFRICCVYZ6KFMSSWY5UEXCF5"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/35VOJS3SRJNLQIO7YTZFNM6RWHIHWTMK"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-89" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-21T19:23:15Z",
    "nvd_published_at" : "2024-05-21T16:15:26Z"
  }
}