CVE-2026-84851

EUVD-2026-70281
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 26.66%
Common Weakness Enumeration
References
https://aws.amazon.com/security/security-bulletins/2026-094-aws/
https://github.com/amazon-ion/ion-c/releases/tag/v1.1.6
https://github.com/amazon-ion/ion-c/security/advisories/GHSA-9gfg-hgj4-gh44