CVE-2024-28182

Name: CVE-2024-28182
Creator: NVD / NIST
Published: 2024-04-04T15:15:38.427+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 84.96%

Last modified Jun 17, 2026

CVE-2024-28182 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 84.96% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS Probability

84.96%

99.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-770

Affected Software

Vendor	Product	Versions
Nghttp2	Nghttp2	< 1.61.0
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0
Fedoraproject	Fedora	38
Fedoraproject	Fedora	39
Fedoraproject	Fedora	40

References

http://www.openwall.com/lists/oss-security/2024/04/03/16Mailing List, Third Party Advisory
https://github.com/nghttp2/nghttp2/commit/00201ecd8f982da3b67d4f6868af72a1b03b14e0Patch
https://github.com/nghttp2/nghttp2/commit/d71a4668c6bead55805d18810d633fbb98315af9Patch
https://github.com/nghttp2/nghttp2/security/advisories/GHSA-x6x3-gv8h-m57qVendor Advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00026.htmlMailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AGOME6ZXJG7664IPQNVE3DL67E3YP3HY/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J6ZMXUGB66VAXDW5J6QSTHM5ET25FGSA/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PXJO2EASHM2OQQLGVDY5ZSO7UVDVHTDK/Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2024/04/03/16Mailing List, Third Party Advisory
https://github.com/nghttp2/nghttp2/commit/00201ecd8f982da3b67d4f6868af72a1b03b14e0Patch
https://github.com/nghttp2/nghttp2/commit/d71a4668c6bead55805d18810d633fbb98315af9Patch
https://github.com/nghttp2/nghttp2/security/advisories/GHSA-x6x3-gv8h-m57qVendor Advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00026.htmlMailing List
https://lists.debian.org/debian-lts-announce/2024/09/msg00041.htmlMailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AGOME6ZXJG7664IPQNVE3DL67E3YP3HY/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J6ZMXUGB66VAXDW5J6QSTHM5ET25FGSA/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PXJO2EASHM2OQQLGVDY5ZSO7UVDVHTDK/Mailing List, Third Party Advisory
https://www.kb.cert.org/vuls/id/421644

Timeline

Published: Apr 4, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-28182?

How severe is CVE-2024-28182?

CVE-2024-28182 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 84.96% probability of exploitation in the next 30 days.

How do I fix CVE-2024-28182?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-28182?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST