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

Dmitry Musatkin + 1 · CVE-2026-5190 · Published 2026-03-31 · Updated 2026-07-24

Positive Technologies (AI Summary)

CVSS v4.0

7.7

High

Base vector

AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-5190

GHSA-XVJW-FJQ5-68HF

OPENSUSE-SU-2026:10512-1

OPENSUSE-SU-2026:20477-1

Affected Products

Aws-C-Event-Stream

References · 12

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5190.json · Exploit
• https://github.com/awslabs/aws-c-event-stream/releases/tag/v0.6.0 · Patch
• https://osv.dev/vulnerability/CVE-2026-5190 · 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://osv.dev/vulnerability/openSUSE-SU-2026:10512-1 · 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://t.me/cveNotify/221406 · Telegram Post
• https://twitter.com/cyberbivash/status/2039058891950985625 · Twitter Post
• https://suse.com/security/cve/CVE-2026-5190 · Note
• https://bugzilla.suse.com/1261298 · Note