CVE-2026-21883: Bokeh server applications have Incomplete Origin Validation in WebSockets
(updated )
This vulnerability allows for Cross-Site WebSocket Hijacking (CSWSH) of a deployed Bokeh server instance.
References
- aydinnyunus.github.io/2026/01/24/bokeh-websocket-hijacking-cve-2026-21883
- github.com/advisories/GHSA-793v-589g-574v
- github.com/bokeh/bokeh
- github.com/bokeh/bokeh/commit/cedd113b0e271b439dce768671685cf5f861812e
- github.com/bokeh/bokeh/security/advisories/GHSA-793v-589g-574v
- nvd.nist.gov/vuln/detail/CVE-2026-21883
Code Behaviors & Features
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