CVE-2026-104020 — Uncontrolled recursion in the Ion reader in Amazon Ion Python
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…
Published: 2026-10-01 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7