What is CVE-2026-18952?

CVE-2026-18952 is a high-severity vulnerability in Aws Opensearch, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.1/10. Published 2026-08-12.

How severe is CVE-2026-18952?

High severity. CVSS v3 base score is 8.1 out of 10.

SSRF in Aws Opensearch

CVE-2026-18952

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…

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Aws Opensearch — versions 2.15.0
Github Opensearch — versions 2.15.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

ff89ba41-3aa1-4d27-914a-91399e9639e5 (patch)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (release-notes, vendor-advisory)

Frequently asked questions

What is CVE-2026-18952?: CVE-2026-18952 is a high-severity vulnerability in Aws Opensearch, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.1/10. Published 2026-08-12.
How severe is CVE-2026-18952?: High severity. CVSS v3 base score is 8.1 out of 10.