CVE-2024-27919
HIGHEPSS 100th pctlDescription
Envoy is a cloud-native, open-source edge and service proxy. In versions 1.29.0 and 1.29.1, theEnvoy HTTP/2 protocol stack is vulnerable to the flood of CONTINUATION frames. Envoy's HTTP/2 codec does not reset a request when header map limits have been exceeded. This allows an attacker to send an sequence of CONTINUATION frames without the END_HEADERS bit set causing unlimited memory consumption. This can lead to denial of service through memory exhaustion. Users should upgrade to versions 1.29.2 to mitigate the effects of the CONTINUATION flood. Note that this vulnerability is a regression in Envoy version 1.29.0 and 1.29.1 only. As a workaround, downgrade to version 1.28.1 or earlier or disable HTTP/2 protocol for downstream connections.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
TridentStack Control tracks known vulnerabilities across your Windows, macOS, and Linux fleet and shows the fix as soon as one is published. See how it works
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
References
Related Vulnerabilities
Other CWE-390 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-30255 | Medium | 5.3 | 88% | - | Fix |
| CVE-2025-26465 | Medium | 6.8 | 7.4% | - | Fix |
| CVE-2019-5051 | High | 8.8 | 4.0% | - | Fix |
| CVE-2021-40391 | Critical | 9.8 | 2.9% | - | Fix |
| CVE-2017-7485 | Medium | 5.9 | 2.0% | - | - |
| CVE-2024-12086 | Medium | 6.1 | 1.8% | - | Fix |
Embed a live status badge for CVE-2024-27919
Markdown
[](https://tridentstack.com/cve/CVE-2024-27919)HTML
<a href="https://tridentstack.com/cve/CVE-2024-27919"><img src="https://tridentstack.com/cve/badge/CVE-2024-27919.svg" alt="CVE-2024-27919"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.