CVE-2026-83497 Unrestricted Java Deserialization in OpenSearch SQL Plugin Cursor Pagination
Remote authenticated users can execute arbitrary code on OpenSearch servers via crafted cursor parameters in the SQL plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-83497?
CVE-2026-83497 is a high-severity unsafe deserialization vulnerability in Amazon OpenSearch Service, published on 31 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-502
Which versions are affected by CVE-2026-83497?
How do I fix CVE-2026-83497?
No fix has been published for CVE-2026-83497 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-83497 being exploited?
There is no known exploitation of CVE-2026-83497 in the wild and no public exploit code.
Sources
Also known as GHSA-rj55-cp95-h7f6.