CVE-2024-5971

CVE-2024-5971 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-674.

Key facts

Description

A vulnerability was found in Undertow, where the chunked response hangs after the body was flushed. The response headers and body were sent but the client would continue waiting as Undertow does not send the expected 0\r\n termination of the chunked response. This results in uncontrolled resource consumption, leaving the server side to a denial of service attack. This happens only with Java 17 TLSv1.3 scenarios.

Frequently asked questions

What is CVE-2024-5971?
A vulnerability was found in Undertow, where the chunked response hangs after the body was flushed. The response headers and body were sent but the client would continue waiting as Undertow does not send the expected 0\r\n termination of the chunked response. This results in uncontrolled resource consumption, leaving the server side to a denial of service attack. This happens only with Java 17 TLSv1.3 scenarios.
How severe is CVE-2024-5971?
CVE-2024-5971 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-5971 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-5971?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-5971 have an EU (EUVD) identifier?
Yes. CVE-2024-5971 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-2452.
When was CVE-2024-5971 published?
CVE-2024-5971 was published on 2024-07-08 and last updated on 2026-06-17.

References

Other CWE-674 (Uncontrolled Recursion) vulnerabilities

Browse all CWE-674 (Uncontrolled Recursion) vulnerabilities →