CVE-2026-40300 — Zulip: Message edit history visible in "moves only" policy through /api/v1/messages/{id}/history
Zulip is an open-source team collaboration tool. Prior to 12.0, With message_edit_history_visibility_policy set to "moves", /api/v1/messages/{id}/history still returns historica…
Published: 2026-05-12 · CVSS: 6.0 · CVSS 4.0
Zulip is an open-source team collaboration tool. Prior to 12.0, With message_edit_history_visibility_policy set to "moves", /api/v1/messages/{id}/history still returns historical content values, allowing low-privilege users to recover text that was edited away from other users' messages. This vulnerability is fixed in 12.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7