PT-2026-29320 · Amazon · Aws-C-Event-Stream

Dmitry Musatkin + 1 · Published 2026-03-31 · Updated 2026-04-09 · CVE-2026-5190

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions aws-c-event-stream versions prior to 0.6.0

Description A flaw exists in the streaming decoder component of aws-c-event-stream that could allow a third party operating a server to cause memory corruption, potentially leading to arbitrary code execution on a client application that processes specially crafted event-stream messages.

Recommendations Upgrade to version 0.6.0 or later.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-5190

OPENSUSE-SU-2026:10512-1

OPENSUSE-SU-2026:20477-1

Affected Products

Aws-C-Event-Stream

References · 9

• https://github.com/awslabs/aws-c-event-stream/releases/tag/v0.6.0 · Patch
• https://osv.dev/vulnerability/openSUSE-SU-2026:10512-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:20477-1 · Vendor Advisory
• https://aws.amazon.com/security/security-bulletins/2026-011-aws · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-5190 · Security Note
• https://github.com/awslabs/aws-c-event-stream/security/advisories/GHSA-xvjw-fjq5-68hf · Note
• https://suse.com/security/cve/CVE-2026-5190 · Note
• https://twitter.com/cyberbivash/status/2039058891950985625 · Twitter Post
• https://bugzilla.suse.com/1261298 · Note