CVE-2024-29156: Yaql Information Leakage Vulnerability

MODERATE
Advisory Identifier: GHSA-mvf6-hwxh-7v76
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CVSS 6.5
CWE-116 CWE-200
Published
Advisory Summary

CVE-2024-29156 is a MODERATE (CVSS 6.5) information leakage vulnerability (CWE-116: Improper Encoding or Escaping of Output) affecting Yaql libraries in the PyPI ecosystem. The issue involves information leakage in yaql. Remediation is available by upgrading affected packages to version 3.0.0.

CVE-2024-29156 at a Glance

CVE Identifier CVE-2024-29156
GHSA Identifier GHSA-mvf6-hwxh-7v76
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-116: Improper Encoding or Escaping of Output
Affected Product Yaql
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.5

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

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

How to Fix CVE-2024-29156

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

yaql fixed: 3.0.0 
pip install yaql>=3.0.0
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 yaql

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-29156, inspect your installed packages using pip:

pip show yaql

Analyze the terminal output to locate any version of Yaql in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.0.0), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-116: Improper Encoding or Escaping of Output, where the product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. as a result, the intended structure of the message is not preserved. In Yaql, 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

YAQL before 3.0.0 is used in Murano, the Murano service's MuranoPL extension to the YAQL language fails to sanitize the supplied environment, leading to potential leakage of sensitive service account information.

CVE-2024-29156 Affected Yaql Versions

1 component(s)
Fixed Versions:
3.0.0
Product / Package Ecosystem Affected Versions Fixed Version
yaql
pypi/yaql
PyPI
< 3.0.0
3.0.0

References

NVD — CVE-2024-29156 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-29156
bugs.launchpad.net/murano/+bug/2048114 WEB
https://bugs.launchpad.net/murano/+bug/2048114
launchpad.net/bugs/2048114 WEB
https://launchpad.net/bugs/2048114
opendev.org/openstack/murano/ta... WEB
https://opendev.org/openstack/murano/tags
opendev.org/openstack/yaql/comm... WEB
https://opendev.org/openstack/yaql/commit/83e28324e1a0ce3970dd854393d2431123a909d3
wiki.openstack.org/wiki/ossn/ossn-0093 WEB
https://wiki.openstack.org/wiki/OSSN/OSSN-0093

Frequently Asked Questions

What is CVE-2024-29156?
CVE-2024-29156 is a security vulnerability in Yaql involving Information leakage in YAQL under CWE-116: Improper Encoding or Escaping of Output.
Which Yaql versions are affected?
Affected versions include releases prior to 3.0.0 across affected packages: yaql.
What version fixes CVE-2024-29156?
Upgrading to 3.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is yaql affected?
Yes, yaql is affected in releases prior to 3.0.0. Upgrade your dependency to 3.0.0 or later.
What is the CVSS score of CVE-2024-29156?
CVE-2024-29156 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2024-29156?
CVE-2024-29156 is classified under CWE-116: Improper Encoding or Escaping of Output (The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.).
How can I check PyPI dependencies for CVE-2024-29156?
Run the dependency tree command: 'pip show yaql'. 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-mvf6-hwxh-7v76",
  "modified" : "2025-03-26T00:43:59Z",
  "published" : "2024-03-18T09:30:30Z",
  "aliases" : [ "CVE-2024-29156" ],
  "summary" : "Information leakage in YAQL",
  "details" : "YAQL before 3.0.0 is used in Murano, the Murano service's MuranoPL extension to the YAQL language fails to sanitize the supplied environment, leading to potential leakage of sensitive service account information.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "yaql"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-29156"
  }, {
    "type" : "WEB",
    "url" : "https://bugs.launchpad.net/murano/+bug/2048114"
  }, {
    "type" : "WEB",
    "url" : "https://launchpad.net/bugs/2048114"
  }, {
    "type" : "WEB",
    "url" : "https://opendev.org/openstack/murano/tags"
  }, {
    "type" : "WEB",
    "url" : "https://opendev.org/openstack/yaql/commit/83e28324e1a0ce3970dd854393d2431123a909d3"
  }, {
    "type" : "WEB",
    "url" : "https://wiki.openstack.org/wiki/OSSN/OSSN-0093"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-116", "CWE-200" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-03-18T20:39:17Z",
    "nvd_published_at" : "2024-03-18T07:15:05Z"
  }
}