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CVE-2026-40300

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CVE-2026-40300

Published: May 12, 2026

Modified: May 13, 2026

PUBLISHED

Description

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Prior to 12.0, With message_edit_history_visibility_policy set to "moves", /api/v1/messages/{id}/history still returns historical content values, allowing low-privilege users to recover text that was edited away from other users' messages.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.

VendorProductVersions

zulip

zulip

affected
< 12.0

Weaknesses (CWE)

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CVE-2026-40300 - Security Vulnerability | QwikSec