What’s Vulnerable › Vulnerabilities

CVE-2026-5708: Improper Control of User-Modifiable Attributes in RES CreateSession API

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-06 · updated 2026-07-24
• Weakness: CWE-915

Description

Unsanitized control of user-modifiable attributes in the session creation component in AWS Research and Engineering Studio (RES) prior to version 2026.03 could allow an authenticated remote user to escalate privileges, assume the virtual desktop host instance profile permissions, and interact with AWS resources and services via a crafted API request. 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

• AWS Research and Engineering Studio (RES): before 2026.03 — fixed in 2026.03

How to fix

Upgrade to a fixed version: AWS Research and Engineering Studio (RES) 2026.03. Check the vendor advisory for mitigations.

References

• https://aws.amazon.com/security/security-bulletins/2026-014-aws/
• https://github.com/aws/res/issues/149
• https://github.com/aws/res/releases/tag/2026.03

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