CVE-2026-18952

HIGH CVSS 4.0: 8.6 EPSS 0.32%
Updated Aug 13, 2026
AWS
Parameter Value
CVSS 8.6 (HIGH)
Affected Versions 2.15.0 — 3.5.0
Fixed In 3.5.0
Type CWE-918 (Server-Side Request Forgery (SSRF))
Vendor AWS
Public PoC No

Missing input validation in the threat intelligence feed parser in the OpenSearch Security Analytics plugin might allow an authenticated remote user to perform server-side request forgery and read local files via a crafted URL parameter to the threat intel source configuration endpoint.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Aws Opensearch
cpe:2.3:a:aws:opensearch:*:*:*:*:*:*:*:*
2.15.0 3.5.0
Github Opensearch
cpe:2.3:a:github:opensearch:*:*:*:*:*:*:*:*
2.15.0 3.5.0