CVE-2024-28182mediumCWE-770

CVE-2024-28182: medium-severity vulnerability in nghttp2

Reading unbounded number of HTTP/2 CONTINUATION frames to cause excessive CPU usage

Published · Updated

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35Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.3epss 82%
What the vendors declare (VEX)

Official vendor statements in CSAF/VEX format: whether their product is affected, already fixed, or ruled out — and why. These are the vendor's assertions, not Vexday's judgment.

Red HatVEX document ↗
Affected
2 products (24 components)
Red Hat Enterprise Linux 8 · Red Hat Software Collections
workaround: 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.
Fixed
24 products (645 components)
Red Hat Enterprise Linux AppStream (v. 9) · Red Hat Enterprise Linux AppStream EUS (v.9.2) · Red Hat Enterprise Linux AppStream (v. 8) · Red Hat JBoss Core Services on RHEL 8 · Red Hat JBoss Core Services on RHEL 7 Server · and others 19
fix ↗
Not affected
1 product (5 components) — because the vulnerable code is not present in the product
Red Hat Enterprise Linux 10
nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. The nghttp2 library prior to version 1.61.0 keeps reading the unbounded number of HTTP/2 CONTINUATION frames even after a stream is reset to keep HPACK context in sync. This causes excessive CPU usage to decode HPACK stream. nghttp2 v1.61.0 mitigates this vulnerability by limiting the number of CONTINUATION frames it accepts per stream. There is no workaround for this vulnerability.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
nghttp2 · nghttp2
Related CVEs — nghttp2

In the same product, most dangerous first.

CVE-2020-11080LOWDenial of service in nghttp2EPSS 5.3%CVE-2016-1544—CVE-2016-1544EPSS 0.9%CVE-2026-27135HIGHnghttp2 Denial of service: Assertion failure due to the missing state validationEPSS 0.8%CVE-2026-58055MEDIUMnghttp2 nghttpx - HTTP Request/Response Smuggling via Upgrade Request with Content-LengthEPSS 0.3%