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CVE-2026-48042

Envoy: Stack overflow in destructor of highly nested JSON

Published: Jun 26, 2026Updated: Jun 29, 2026 Sources: CVE List NVDCWE-1124
7.5HIGH
NVD MITRE
EPSS Score
0.4%
Top 70.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, destructor of JSON Object results in stack overflow when deeply O(100K) nested objects are present. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-1124

Affected Products

envoyproxy
oss-project·USaka envoy proxy, envoy
envoyOn-prem
Cloud & SaaS / api-gateway

Exploitability

Official Patch Available
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References

https://github.com/envoyproxy/envoy/security/advisories/GHSA-f24p-rxw2-g6pv
github.com
https://github.com/envoyproxy/envoy/blob/099a9d71ebfd8aa9f823e1738b34138cb634a07b/source/common/json/json_loader.h#L21
github.com

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