CVE-2026-104020
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
Oct 01, 2026
Vendor
unknown
Description
Uncontrolled recursion in the Ion reader in Amazon Ion Python before 0.15.0 might allow a remote unauthenticated actor to crash the application using the library, resulting in a denial of service, via a crafted, deeply nested Ion value. To remediate this issue, users should upgrade to version 0.15.0 or later.