[ CVE-2026-104020 · Published 1 Oct 2026 ]
Vulnerability in Amazon ion-python
CVSS 7.5
EPSS <1%No fix listed yet
[ Description ]Official 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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.