CVE-2026-104020: Uncontrolled recursion in the Ion reader in Amazon Ion Python
Amazon · ion-python
Fixed in 0.15.0 · Affected: Amazon ion-python before 0.15.0 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 38% of scored CVEs
DescriptionCVE.org
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 products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Amazon · ion-pythonbefore 0.15.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Amazon
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-104020 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.