---
id: CVE-2024-12401
title: A flaw was found in the cert-manager package
summary: >-
  A flaw was found in the cert-manager package. This flaw allows an attacker who
  can modify PEM data that the cert-manager reads, for example, in a Secret
  resource, to use large amounts of CPU in the cert-manager controller pod to
  effectiv…
severity: medium
cvss: 4.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-20
published: '2024-12-12'
updated: '2026-06-26'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-12401'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2024-12401'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2327929'
    label: secalert@redhat.com
  - url: 'https://github.com/cert-manager/cert-manager/pull/7400'
    label: secalert@redhat.com
  - url: 'https://github.com/cert-manager/cert-manager/pull/7401'
    label: secalert@redhat.com
  - url: 'https://github.com/cert-manager/cert-manager/pull/7402'
    label: secalert@redhat.com
  - url: 'https://github.com/cert-manager/cert-manager/pull/7403'
    label: secalert@redhat.com
  - url: >-
      https://github.com/cert-manager/cert-manager/security/advisories/GHSA-r4pg-vg54-wxx4
    label: secalert@redhat.com
  - url: 'https://go.dev/issue/50116'
    label: secalert@redhat.com
tags:
  - nvd
epss: 0.00673
epssPercentile: 0.50702
ingestedAt: '2026-06-26T16:43:13.401Z'
---

## Overview

A flaw was found in the cert-manager package. This flaw allows an attacker who can modify PEM data that the cert-manager reads, for example, in a Secret resource, to use large amounts of CPU in the cert-manager controller pod to effectively create a denial-of-service (DoS) vector for the cert-manager in the cluster.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.