Stack Overflow Vulnerability in Envoy Proxy Affects Cloud-Native Applications
CVE-2026-48042

7.5HIGH

Key Information:

Vendor

Envoyproxy

Status
Envoy
Vendor
CVE Published:
26 June 2026

What is CVE-2026-48042?

The Envoy Proxy, an open-source edge and service proxy, experiences a vulnerability related to a stack overflow caused by the destructor of JSON objects. This issue arises when the JSON data structure is excessively nested, leading to potential crashes and service interruptions. The vulnerability affects specific versions of Envoy prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, highlighting the importance of upgrading to the latest versions to ensure stable and secure operation.

Affected Version(s)

envoy >= 1.38.0, < 1.38.1 < 1.38.0, 1.38.1

envoy >= 1.37.0, < 1.37.3 < 1.37.0, 1.37.3

envoy >= 1.36.0, < 1.36.7 < 1.36.0, 1.36.7

References

https://github.com/envoyproxy/envoy/security/advisories/G...
x_refsource_CONFIRM
https://github.com/envoyproxy/envoy/blob/099a9d71ebfd8aa9...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.