ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2024-3653

A vulnerability was found in Undertow.

Published Jul 8, 2024 · catalog updated Nov 6, 2026 · A vulnerability was found

Last checked Nov 9, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2024-3653. EPSS is 1.87%. Act only if a listed version of A vulnerability was found is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A vulnerability was found).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.87%
Remediation
Advisory link
Affected products
vendor Red Hat OpenShift Serverless · vendor Red Hat Red Hat JBoss Enterprise Application Platform · vendor Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8 · vendor Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9 · vendor Red Hat Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7 · vendor Red Hat Red Hat JBoss Enterprise Application Platform 8

A vulnerability was found in Undertow. This issue requires enabling the learning-push handler in the server's config, which is disabled by default, leaving the maxAge config in the handler unconfigured. The default is -1, which makes the handler vulnerable. If someone overwrites that config, the server is not subject to the attack. The attacker needs to be able to reach the server with a normal HTTP request.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Red Hat OpenShift Serverlessversion unspecified
  • vendor Red Hat Red Hat JBoss Enterprise Application Platformversion unspecified
  • vendor Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8version unspecified
  • vendor Red Hat Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9version unspecified
  • vendor Red Hat Red Hat JBoss Enterprise Application Platform 7.4 on RHEL 7version unspecified
  • vendor Red Hat Red Hat JBoss Enterprise Application Platform 8version unspecified
  • vendor Red Hat Red Hat build of Quarkus 3.8.6.redhatversion unspecified

How to fix CVE-2024-3653

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2024-3653. EPSS is 1.87%. Act only if a listed version of A vulnerability was found is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-401: Missing Release of Memory after Effective Lifetime. EPSS 1.87%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 8, 2024 · NIST NVD

    Detected

    A vulnerability was found in Undertow. This issue requires enabling the learning-push handler in the server's config, which is disabled by default, leaving the maxAge config in the handler unconfigured. The default is -1, which makes the handler vulnerable. If someone overwrites that config, the server is not subject to the attack. The attacker needs to be able to reach the server with a normal HT

  2. Nov 6, 2026 · NIST NVD

    Updated

    A vulnerability was found in Undertow. This issue requires enabling the learning-push handler in the server's config, which is disabled by default, leaving the maxAge config in the handler unconfigured. The default is -1, which makes the handler vulnerable. If someone overwrites that config, the server is not subject to the attack. The attacker needs to be able to reach the server with a normal HT

Sources

  • CIRCL Vulnerability LookupVulnerability recordCVE-2024-3653

    A vulnerability was found in Undertow. This issue requires enabling the learning-push handler in the server's config, which is disabled by default, leaving the maxAge config in the handler unconfigured. The default is -1, which makes the handler vulnerable. If someone overwrites

    vulnerability.circl.lu
  • CVE.orgVulnerability recordCVE-2024-3653

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2024-3653

    30-day exploitation probability 1.87%

    first.org
  • NIST NVDVulnerability recordCVE-2024-3653

    A vulnerability was found in Undertow. This issue requires enabling the learning-push handler in the server's config, which is disabled by default, leaving the maxAge config in the handler unconfigured. The default is -1, which makes the handler vulnerable. If someone overwrites

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 9, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 9, 2026
  • NIST NVDNov 6, 2026
  • CVE.orgNov 6, 2026
  • CIRCL Vulnerability LookupNov 6, 2026