CVE-2024-34363

HIGH
MEDIUM Priority: 0.05 BB Relevance: 75/100
Published: 2024-06-04 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

Description

Envoy is a cloud-native, open source edge and service proxy. Due to how Envoy invoked the nlohmann JSON library, the library could throw an uncaught exception from downstream data if incomplete UTF-8 strings were serialized. The uncaught exception would cause Envoy to crash.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
envoyproxy envoy 1.28.0 – 1.28.4
envoyproxy envoy >= 1.30.0, <= 1.30.1
envoyproxy envoy >= 1.29.0, <= 1.29.4
envoyproxy envoy >= 1.28.0, <= 1.28.3

References & Advisories (1)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.67%
Raw Score 0.006740
Percentile 52.7%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00674
2026-11-13
0.00674
2026-11-12
0.00674
2026-11-10
0.00674
2026-11-09
0.00674
2026-11-08
0.00674
2026-11-07
0.00674
2026-11-06
0.00674
2026-11-05
0.00674

Intelligence Sources

mitre ref →
nvd ref →