Skip to main content
CRITICAL

CVE-2024-21662

CVSS v3

9.1

CRITICAL

EPSS Score

0.8 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Get an alert for each new CVE published for argo-cd.

Set up CVE WatchFree account · no credit card

Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • argo-cdBitnamiall versions · fixed in 2.10.4
  • github.com/argoproj/argo-cd/v2Goall versions · fixed in 2.8.13

Vendor advisories

  • CVE-2024-21662 Red Hat Product Security115 products fixed · 1 known affected

    argo-cd: Bypassing Rate Limit and Brute Force Protection Using Cache Overflow

    odf4/odr-rhel8-operator as a component of Red Hat Openshift Data Foundation 4

  • RHSA-2024:1753 Red Hat Product Security35 products fixed

    Red Hat Security Advisory: Errata Advisory for Red Hat OpenShift GitOps v1.12.1 security update

  • RHSA-2024:1752 Red Hat Product Security14 products fixed

    Red Hat Security Advisory: GitOps 1.12.1- Argo CD CLI and MicroShift GitOps security update

  • RHSA-2024:1700 Red Hat Product Security33 products fixed

    Red Hat Security Advisory: Errata Advisory for Red Hat OpenShift GitOps v1.10.4 security update

  • RHSA-2024:1697 Red Hat Product Security33 products fixed

    Red Hat Security Advisory: Errata Advisory for Red Hat OpenShift GitOps v1.11.3 security update

Full record on NVD

Description

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to versions 2.8.13, 2.9.9, and 2.10.4, an attacker can effectively bypass the rate limit and brute force protections by exploiting the application's weak cache-based mechanism. This loophole in security can be combined with other vulnerabilities to attack the default admin account. This flaw undermines a patch for CVE-2020-8827 intended to protect against brute-force attacks. The application's brute force protection relies on a cache mechanism that tracks login attempts for each user. This cache is limited to a `defaultMaxCacheSize` of 1000 entries. An attacker can overflow this cache by bombarding it with login attempts for different users, thereby pushing out the admin account's failed attempts and effectively resetting the rate limit for that account. This is a severe vulnerability that enables attackers to perform brute force attacks at an accelerated rate, especially targeting the default admin account. Users should upgrade to version 2.8.13, 2.9.9, or 2.10.4 to receive a patch.

Technical details

Published
2024-03-18

Frequently asked questions

What is CVE-2024-21662?

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to versions 2.8.13, 2.9.9, and 2.10.4, an attacker can effectively bypass the rate limit and brute force protections by exploiting the application's weak cache-based mechanism. This loophole in security can be combined with other vulnerabilities to attack the default admin account. This flaw undermines a patch for CVE-2020-8827 intended to protect against brute-force attacks. The application's brute force protection relies on a cache mechanism that tracks login attempts for each user. This cache is limited to a `defaultMaxCacheSize` of 1000 entries. An attacker can overflow this cache by bombarding it with login attempts for different users, thereby pushing out the admin account's failed attempts and effectively resetting the rate limit for that account. This is a severe vulnerability that enables attackers to perform brute force attacks at an accelerated rate, especially targeting the default admin account. Users should upgrade to version 2.8.13, 2.9.9, or 2.10.4 to receive a patch.

Is CVE-2024-21662 actively exploited?

Active exploitation of CVE-2024-21662 has not been confirmed. Its EPSS score was 0.8% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-21662?

CVE-2024-21662 has a CVSS v3 base score of 9.1 (CRITICAL severity).

Running argo-cd? Hear about its next vulnerability

CVE Watch matches each new CVE to the vendors and products you list (vendor and product, not the version) and puts it in your alerts with its KEV and EPSS status.

Get alerts for this productCISA KEV additions, October 2026Search CVEs

Already have an account? Open CVE WatchNo credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database