CVE-2024-28182
nghttp2: CONTINUATION frames DoS
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 3, 2024
Updated · October 15, 2026
Description
A vulnerability was found in how nghttp2 implements the HTTP/2 protocol. There are insufficient limitations placed on the amount of CONTINUATION frames that can be sent within a single stream. This issue could allow an unauthenticated remote attacker to send packets to vulnerable servers, which could use up compute or memory resources to cause a Denial of Service.
Statement
Red Hat rates the security impact of this vulnerability as Moderate, in alignment with upstream nghttp2. The worst case scenario is excessive CPU utilization causing a denial of service. Once an attack has ended, the system should return to normal operations on its own.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.
CVSS / CWE
CVSS 3.1 · 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-390 · Detection of Error Condition Without Action