Is CVE-2026-40127 actively exploited?

No active exploitation of CVE-2026-40127 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-40127 be exploited remotely?

Yes. CVE-2026-40127 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-40127?

CVE-2026-40127 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2026-40127

CWE-639Published: May 25, 2026· Updated: May 26, 2026

5.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.6th

Official 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

NVD Source

Technical Analysis

CVE-2026-40127 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X