CVE-2023-2816
CWE-266Published: June 2, 2023· Updated: Jun 17, 2026
Official Description
Consul and Consul Enterprise allowed any user with service:write permissions to use Envoy extensions configured via service-defaults to patch remote proxy instances that target the configured service, regardless of whether the user has permission to modify the service(s) corresponding to those modified proxies.
Technical Analysis
CVE-2023-2816 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 6.5.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-266)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-2816 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts