CVE-2024-36827: Ebookmeta Ebookmeta XML External Entity Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-whf4-fpj8-pgg8
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CVSS 7.5
CWE-776 CWE-611
Published
Advisory Summary

CVE-2024-36827 is a HIGH (CVSS 7.5) ebookmeta xml external entity vulnerability vulnerability (CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')) affecting Ebookmeta libraries in the PyPI ecosystem. The issue involves ebookmeta xml external entity vulnerability. Remediation is available by upgrading affected packages to version 1.2.8.

CVE-2024-36827 at a Glance

CVE Identifier CVE-2024-36827
GHSA Identifier GHSA-whf4-fpj8-pgg8
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
Affected Product Ebookmeta
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:N/I:N/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 None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2024-36827

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

ebookmeta fixed: 1.2.8 
pip install ebookmeta>=1.2.8
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 ebookmeta

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-36827, inspect your installed packages using pip:

pip show ebookmeta

Analyze the terminal output to locate any version of Ebookmeta in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.2.8), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion'), where the product uses xml documents and allows their structure to be defined with a document type definition (dtd), but it does not properly control the number of recursive definitions of entities. In Ebookmeta, 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

An XML External Entity (XXE) vulnerability in the `ebookmeta.get_metadata` function of ebookmeta before v1.2.8 allows attackers to access sensitive information or cause a Denial of Service (DoS) via crafted XML input.

CVE-2024-36827 Affected Ebookmeta Versions

1 component(s)
Fixed Versions:
1.2.8
Product / Package Ecosystem Affected Versions Fixed Version
ebookmeta
pypi/ebookmeta
PyPI
< 1.2.8
1.2.8

References

NVD — CVE-2024-36827 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-36827
Ebookmeta Source Repository REPOSITORY
https://github.com/dnkorpushov/ebookmeta/issues/16#issue-2317712335
Ebookmeta Source Repository REPOSITORY
https://github.com/dnkorpushov/ebookmeta
Ebookmeta Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/ebookmeta/PYSEC-2024-76.yaml

Frequently Asked Questions

What is CVE-2024-36827?
CVE-2024-36827 is a security vulnerability in Ebookmeta involving ebookmeta XML External Entity vulnerability under CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion').
Which Ebookmeta versions are affected?
Affected versions include releases prior to 1.2.8 across affected packages: ebookmeta.
What version fixes CVE-2024-36827?
Upgrading to 1.2.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ebookmeta affected?
Yes, ebookmeta is affected in releases prior to 1.2.8. Upgrade your dependency to 1.2.8 or later.
What is the CVSS score of CVE-2024-36827?
CVE-2024-36827 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2024-36827?
CVE-2024-36827 is classified under CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') (The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities.).
How can I check PyPI dependencies for CVE-2024-36827?
Run the dependency tree command: 'pip show ebookmeta'. 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-whf4-fpj8-pgg8",
  "modified" : "2025-03-31T13:36:20Z",
  "published" : "2024-06-07T21:31:54Z",
  "aliases" : [ "CVE-2024-36827" ],
  "summary" : "ebookmeta XML External Entity vulnerability",
  "details" : "An XML External Entity (XXE) vulnerability in the `ebookmeta.get_metadata` function of ebookmeta before v1.2.8 allows attackers to access sensitive information or cause a Denial of Service (DoS) via crafted XML input.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "ebookmeta"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.2.8"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-36827"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dnkorpushov/ebookmeta/issues/16#issue-2317712335"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/dnkorpushov/ebookmeta"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/ebookmeta/PYSEC-2024-76.yaml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-611", "CWE-776" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-06-07T21:54:40Z",
    "nvd_published_at" : "2024-06-07T19:15:24Z"
  }
}