High severity7.5NVD Advisory· Published Sep 3, 2026

CVE-2026-84851

Description

An uncontrolled recursion issue exists in Amazon Ion-C versions before 1.1.6 that might allow a remote unauthenticated actor to craft Ion data that exhausts the native call stack and crashes the application using the library, resulting in a denial of service.

Affected products

Amazon Ion/Ion Cllm-fuzzy
Range: <1.1.6

Patches

Vulnerability mechanics

References

aws.amazon.com/security/security-bulletins/2026-094-aws/nvd
github.com/amazon-ion/ion-c/releases/tag/v1.1.6nvd
github.com/amazon-ion/ion-c/security/advisories/GHSA-9gfg-hgj4-gh44nvd

News mentions

No linked articles in our index yet.

cvss	0.488
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000