CVE-2026-83497CWE-502insecure-deserialization

CVE-2026-83497

High · published August 31, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
61.3
In the wild
Unconfirmed
What it is

Unrestricted deserialization of untrusted data in the cursor pagination component in the OpenSearch SQL plugin allows a remote authenticated user with basic read/search permissions to execute arbitrary code on the server by sending a crafted cursor parameter to the plugins/sql endpoint.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00962 · 61.3th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-08-31T23:17Z
References (3)
https://aws.amazon.com/security/security-bulletins/2026-092-aws/ · ff89ba41-3aa1-4d27-914a-91399e9639e5https://opensearch.org/artifacts/by-version/#release-2-19-6 · ff89ba41-3aa1-4d27-914a-91399e9639e5https://opensearch.org/artifacts/by-version/#release-3-7-0 · ff89ba41-3aa1-4d27-914a-91399e9639e5
EPSS history
Timeline
  • 02 SEP 03:40Z
    EPSS moved — → 1%
    epss
  • 31 AUG 18:36Z
    Unrestricted Java Deserialization in OpenSearch SQL Plugin Cursor Pagination
    cvelistv5