🛡️ CVE-2024-2435
🟡 CVSS 4.3 — Medium ✅ No Known Exploit NVD
4.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

For an attacker with pre-existing access to send a signal to a workflow, the attacker can make the signal name a script that executes when a victim views that signal. The XSS is in the timeline page displaying the workflow execution details of the workflow that was sent the crafted signal. Access to send a signal to a workflow is determined by how you configured the authorizer on your server. This includes any entity with permission to directly call SignalWorkflowExecution or SignalWithStartWorkflowExecution, or any entity can deploy a worker that has access to call workflow progress APIs (specifically RespondWorkflowTaskCompleted).

Details

Severity Medium
CVSS Score 4.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-06-04
Updated 2026-06-15
Modified 2026-02-04
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/temporalio/ui-server — —
github.com/temporalio/ui-server/v2 — —
unknown — —

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