What is CVE-2026-40127?
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
The record classifies CVE-2026-40127 under weakness class CWE-639. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 153 days ago.
Severity and exploitation probability
- CVSS v4.0 base score
- 5.3 — Medium (derived from score)
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 - EPSS (FIRST)
- 0.5% probability of exploitation in the next 30 days, higher than 47.0% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 4.5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-05-25, last modified 2026-08-11
Is CVE-2026-40127 being exploited?
It currently carries a trending score of 17 in the Threadlinqs vulnerability feed.
Affected products and versions
- OutSystems: Lifetime
How to fix CVE-2026-40127
No vendor patch reference has been recorded for CVE-2026-40127 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-40127
1 tracked threat in the Threadlinqs corpus references CVE-2026-40127, either in the campaign’s CVE list or as an indicator on the campaign record.
Sources
Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on .