Vulnerability · Published Apr 6, 2026 · Assigned by AMZN

CVE-2026-5709AWS Research and Engineering Studio (RES) FileBrowser Command Injection

High 8.8

In plain English

A high-severity OS command injection in Research and Engineering Studio (RES) from AWS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.1%top 34.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Unsanitized input in the FileBrowser API in AWS Research and Engineering Studio (RES) version 2024.10 through 2025.12.01 might allow a remote authenticated actor to execute arbitrary commands on the cluster-manager EC2 instance via crafted input when using the FileBrowser functionality. To remediate this issue, users are advised to upgrade to RES version 2026.03 or apply the corresponding mitigation patch to their existing environment.

Affected products (as reported)

Vendor	Product	Versions
AWS	Research and Engineering Studio (RES)	2024.10 – through 2025.12.01

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/aws/res/releases/tag/2026.03 release-notes
https://github.com/aws/res/issues/150 patch
https://aws.amazon.com/security/security-bulletins/2026-014-aws/ vendor-advisory