CVE-2026-84851
Amazon Ion-C Uncontrolled Recursion Denial of Service
Description
An uncontrolled recursion issue exists in Amazon Ion-C versions before 1.1.6 that might allow a remote unauthenticated actor to craft Ion data that exhausts the native call stack and crashes the application using the library, resulting in a denial of service.
INFO
Published Date :
Sept. 2, 2026, 9:05 p.m.
Last Modified :
Sept. 2, 2026, 9:05 p.m.
Remotely Exploit :
Yes !
Source :
None
Affected Products
The following products are affected by CVE-2026-84851
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Update Amazon Ion-C to version 1.1.6 or later.
- Apply necessary patches or updates to the application.
- Validate that the recursion issue is resolved.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-84851.
| URL | Resource |
|---|---|
| https://github.com/amazon-ion/ion-c/releases/tag/v1.1.6 | release-notes patch |
| https://aws.amazon.com/security/security-bulletins/2026-094-aws/ | vendor-advisory |
| https://github.com/amazon-ion/ion-c/security/advisories/GHSA-9gfg-hgj4-gh44 | release-notes |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-84851 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-84851
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-84851 vulnerability anywhere in the article.