What’s Vulnerable › Vulnerabilities

CVE-2026-40127: Authorization Bypass Through User-Controlled Key in OutSystems Lifetime

• Severity: medium (CVSS 5.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-25 · updated 2026-08-11
• Weakness: CWE-639

Description

OutSystems Lifetime is vulnerable to Authorization Bypass Through User-Controlled Key vulnerability in ApplicationID parameter. Any authenticated user, can read the Change Log containing actions performed by other users as well as application name of any application. This issue was fixed in OutSystems Lifetime version 11.28.2.3955

Affected products

• OutSystems Lifetime: before 11.28.2.3955 — fixed in 11.28.2.3955

How to fix

Upgrade to a fixed version: OutSystems Lifetime 11.28.2.3955. Check the vendor advisory for mitigations.

References

• https://cert.pl/en/posts/2026/05/CVE-2026-40126/
• https://success.outsystems.com/support/security/vulnerabilities/vulnerability_rpm_6441/
• https://www.outsystems.com/downloads/ScreenDetails?ReleaseId=22953&MajorVersion=11&ComponentName=LifeTime

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