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.
Published: 2026-10-01
Score: 8.7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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History

Thu, 01 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
References

Thu, 01 Oct 2026 21:00:00 +0000

Type Values Removed Values Added
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.
Title Uncontrolled recursion in the Ion reader in Amazon Ion Python
Weaknesses CWE-674
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-10-01T21:07:33.567Z

Reserved: 2026-10-01T16:57:41.444Z

Link: CVE-2026-104020

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-01T21:17:18.650

Modified: 2026-10-01T21:17:18.650

Link: CVE-2026-104020

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses