{"cve":"CVE-2024-2435","nvd":{"published":"2024-04-02T17:15:46.610","modified":"2026-06-17T07:24:32.000","status":"Deferred","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.\nAccess 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).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L","score":4.3},"cwes":["CWE-79"],"references":["https://github.com/temporalio/ui-server/releases/tag/v2.25.0","https://github.com/temporalio/ui-server/releases/tag/v2.25.0"],"products":[],"source":"nvd","synced_at":"2026-10-19T21:47:51.568503435+00:00"},"epss":{"cve":"CVE-2024-2435","score":0.00394,"percentile":0.33648,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8f25-w7qj-r7hc","url":"https://osv.dev/vulnerability/GHSA-8f25-w7qj-r7hc","summary":"Temporal UI Server cross-site scripting vulnerability","modified":"2026-09-10T03:50:12.506459590Z","packages":[{"ecosystem":"Go","name":"github.com/temporalio/ui-server/v2","purl":"pkg:golang/github.com/temporalio/ui-server/v2","ranges":["<2.25.0"],"fixed":["2.25.0"]}]},{"id":"GO-2024-2675","url":"https://osv.dev/vulnerability/GO-2024-2675","summary":"Temporal UI Server cross-site scripting vulnerability in github.com/temporalio/ui-server","modified":"2026-02-04T02:56:18.395475Z","packages":[{"ecosystem":"Go","name":"github.com/temporalio/ui-server","purl":"pkg:golang/github.com/temporalio/ui-server","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/temporalio/ui-server/v2","purl":"pkg:golang/github.com/temporalio/ui-server/v2","ranges":["<2.25.0"],"fixed":["2.25.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}