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Back to active CVEs
Medium · CVSS 5.7CVE-2024-34364

Envoy OOM vector from HTTP async client with unbounded response buffer for mirror responseCVE-2024-34364

Answer in brief

CVE-2024-34364 records a Medium severity (CVSS 5.7) vulnerability in Envoy OOM vector from HTTP async client with unbounded response buffer for mirror response. The current sources do not mark it as known exploited. The current feed maps envoyproxy/envoy (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 4, 2024Updated Nov 5, 2026Source checked Nov 5, 2026First seen by HOL Nov 5, 2026Material review Nov 5, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps envoyproxy/envoy (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
envoyproxy/envoygeneric>=1.30.0 <=1.30.1 || >=1.29.0 <=1.29.4 || >=1.28.0 <=1.28.3 || <=1.27.5= 1.27.5

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for envoyproxy/envoy.
  2. 2Review the reported fix. Update envoyproxy/envoy to = 1.27.5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jun 4, 2024

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 5, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
Upstream source description

Envoy is a cloud-native, open source edge and service proxy. Envoy exposed an out-of-memory (OOM) vector from the mirror response, since async HTTP client will buffer the response with an unbounded buffer.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Keycloak-services: keycloak-services: unauthenticated cpu denial of service via saml xml datetime and duration parsingAlso CWE-400
  • Keycloak-services: keycloak-services: unauthenticated persistent disk exhaustion via theme gzip cacheAlso CWE-400

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-400
Source
CVE List V5
Source checked
Nov 5, 2026
References
1 linked source
Open source record