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OpenAdvisories
High · 7.5 CVE-2026-104020 EUVD-2026-91059

Uncontrolled recursion in the Ion reader in Amazon Ion Python

Published Oct 1, 2026 · Updated Oct 9, 2026 · Assigned by AMZN

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.

Affected products

VendorProductAffectedFixed
Amazon ion-python < 0.15.0 0.15.0

References