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Vulnerabilities

Vulnerability · CVE-2024-28182

nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C.

Published Apr 4, 2024 · catalog updated Oct 15, 2026 · nghttp2 is an implementation

Check this week

CVE-2024-28182 is not in CISA KEV. FIRST estimates a 84.96% chance of exploitation in the next 30 days. Check whether you run nghttp2 is an implementation.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (nghttp2 is an implementation).
  • 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
84.96%
Remediation
Advisory link
Affected products
cpe debian/debian linux · cpe fedoraproject/fedora · cpe nghttp2/nghttp2

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.

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.

  • cpe debian/debian linux10.0
  • cpe debian/debian linux11.0
  • cpe fedoraproject/fedora38
  • cpe fedoraproject/fedora39
  • cpe fedoraproject/fedora40
  • cpe nghttp2/nghttp2version unspecified

How to fix CVE-2024-28182

What to do

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

Should you patch?

CVE-2024-28182 is not in CISA KEV. FIRST estimates a 84.96% chance of exploitation in the next 30 days. Check whether you run nghttp2 is an implementation.

Which versions are affected?

Compare what you have installed with debian/debian linux 10.0; debian/debian linux 11.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-770: Allocation of Resources Without Limits or Throttling. EPSS 84.96%. 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.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 4, 2024 · NIST NVD

    Detected

    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 a

  2. Oct 15, 2026 · NIST NVD

    Updated

    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 a

Sources

  • CVE.orgVulnerability recordCVE-2024-28182

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2024-28182

    30-day exploitation probability 85.0%

    first.org
  • NIST NVDVulnerability recordCVE-2024-28182

    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 usag

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 15, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.