---
id: CVE-2021-40323
aliases:
  - GHSA-cpqf-3c3r-c9g2
  - PYSEC-2021-373
title: Cobbler before 3.3.0 allows log poisoning
summary: Cobbler before 3.3.0 allows log poisoning
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: cobbler
product: cobbler
ecosystem: pip
affected:
  - cobbler < 3.3.0
patched:
  - cobbler 3.3.0
published: '2021-10-05'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:49:09.105657730Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-cpqf-3c3r-c9g2'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2021-40323'
  - url: >-
      https://github.com/cobbler/cobbler/commit/d8f60bbf14a838c8c8a1dba98086b223e35fe70a
  - url: 'https://github.com/advisories/GHSA-cpqf-3c3r-c9g2'
  - url: 'https://github.com/cobbler/cobbler'
  - url: 'https://github.com/cobbler/cobbler/releases/tag/v3.3.0'
  - url: >-
      https://github.com/pypa/advisory-database/tree/main/vulns/cobbler/PYSEC-2021-373.yaml
tags:
  - osv
  - pip
  - exploit-available
epss: 0.86829
epssPercentile: 0.99741
exploits:
  nuclei:
    - CVE-2021-40323
  checkedAt: '2026-09-21T15:24:28.513Z'
exploitAvailable: true
ingestedAt: '2026-09-12T03:13:01.688Z'
---

## Overview

Cobbler before 3.3.0 allows log poisoning, and resultant Remote Code Execution, via an XMLRPC method that logs to the logfile for template injection.

## Affected packages

- `cobbler < 3.3.0`

## Remediation

Upgrade to a patched release:

- `cobbler 3.3.0`