CVE-2025-14881: Pretix Pretix Has Broken Access Control Vulnerability

LOW
Advisory Identifier: GHSA-r2h2-g46h-8mx8
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CWE-639
Published
Advisory Summary

CVE-2025-14881 is a LOW pretix has broken access control vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affecting Pretix libraries in the PyPI ecosystem. The issue involves pretix has broken access control allowing cross-user file access via uuid. Remediation is available by upgrading affected packages to version 2025.8.3, 2025.10.1, 2025.9.3.

CVE-2025-14881 at a Glance

CVE Identifier CVE-2025-14881
GHSA Identifier GHSA-r2h2-g46h-8mx8
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-639: Authorization Bypass Through User-Controlled Key
Affected Product Pretix
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix CVE-2025-14881

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

pretix fixed: 2025.8.3 
pip install pretix>=2025.8.3
pretix fixed: 2025.10.1 
pip install pretix>=2025.10.1
pretix fixed: 2025.9.3 
pip install pretix>=2025.9.3
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 pretix

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-14881, inspect your installed packages using pip:

pip show pretix

Analyze the terminal output to locate any version of Pretix in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2025.8.3), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-639: Authorization Bypass Through User-Controlled Key, where the system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. In Pretix, 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

Multiple API endpoints allowed access to sensitive files from other users by knowing the UUID of the file that were not intended to be accessible by UUID only.

CVE-2025-14881 Affected Pretix Versions

3 component(s)
Fixed Versions:
2025.8.32025.10.12025.9.3
Product / Package Ecosystem Affected Versions Fixed Version
pretix
pypi/pretix
PyPI
< 2025.8.3
2025.8.3
pretix
pypi/pretix
PyPI
≥ 2025.10.0
< 2025.10.1
2025.10.1
pretix
pypi/pretix
PyPI
≥ 2025.9.0
< 2025.9.3
2025.9.3

References

NVD — CVE-2025-14881 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-14881
Security Fix Commit FIX COMMIT
https://github.com/pretix/pretix/commit/4b5651862c57c6e384822d1d23292342126c479a
Pretix Source Repository REPOSITORY
https://github.com/pretix/pretix
Pretix Release RELEASE
https://pretix.eu/about/en/blog/20251219-release-2025-10-1

Frequently Asked Questions

What is CVE-2025-14881?
CVE-2025-14881 is a security vulnerability in Pretix involving pretix has Broken Access Control Allowing Cross-User File Access via UUID under CWE-639: Authorization Bypass Through User-Controlled Key.
Which Pretix versions are affected?
Affected versions include releases prior to 2025.8.3, 2025.10.1, 2025.9.3 across affected packages: pretix.
What version fixes CVE-2025-14881?
Upgrading to 2025.8.3, 2025.10.1, 2025.9.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pretix affected?
Yes, pretix is affected in releases prior to 2025.8.3, 2025.10.1, 2025.9.3. Upgrade your dependency to 2025.8.3, 2025.10.1, 2025.9.3 or later.
What CWE is associated with CVE-2025-14881?
CVE-2025-14881 is classified under CWE-639: Authorization Bypass Through User-Controlled Key (The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.).
How can I check PyPI dependencies for CVE-2025-14881?
Run the dependency tree command: 'pip show pretix'. 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-r2h2-g46h-8mx8",
  "modified" : "2025-12-20T17:39:02Z",
  "published" : "2025-12-19T15:31:18Z",
  "aliases" : [ "CVE-2025-14881" ],
  "summary" : "pretix has Broken Access Control Allowing Cross-User File Access via UUID",
  "details" : "Multiple API endpoints allowed access to sensitive files from other users by knowing the UUID of the file that were not intended to be accessible by UUID only.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U"
  } ],
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  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-14881"
  }, {
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    "url" : "https://github.com/pretix/pretix"
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  } ],
  "database_specific" : {
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    "severity" : "LOW",
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    "nvd_published_at" : "2025-12-19T13:16:01Z"
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}