Improper access control in Pivotal Concourse - #VU144317
Published: August 19, 2026
Vulnerability identifier: #VU144317
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper access control in the HeartbeatWorker endpoint when handling authenticated heartbeat requests to another team\'s worker. A remote user can send a crafted heartbeat request with invalid worker information to cause a denial of service.
The issue affects authenticated users even if they have no team membership.
Affected software
Pivotal Concourse
Remediation
Install security update from vendor's website.
Pivotal Concourse - update to 8.3.0