CVE-2026-115474
Zulip: Saving a draft DM to a user bypasses can_access_all_users_group permission
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
Zulip is an open-source team collaboration tool. From 8.0 until 12.2, in organizations where the Who can view all other users in the organization setting restricted guests from viewing other users, saving or editing a direct message draft did not verify that the sender could access the draft recipients. A guest could thereby gain access to otherwise restricted users' profile information without sending a message. Organizations that did not restrict guest access were unaffected. This issue is fixed in version 12.2.
| CWE | CWE-862 |
| Vendor | zulip |
| Product | zulip |
| Published | Nov 4, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
zulip / zulip
>= 8.0, < 12.2
References
github.com: https://github.com/zulip/zulip/security/advisories/GHSA-vwqp-7j32-xfg5 github.com: https://github.com/zulip/zulip/pull/39913 github.com: https://github.com/zulip/zulip/commit/1127d4cd3cc17a3cc38435ce57ed52b083c33f97 github.com: https://github.com/zulip/zulip/commit/83a4a3a966e6eef11914b80f04426ae114a1970d github.com: https://github.com/zulip/zulip/releases/tag/12.2 zulip.readthedocs.io: https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-12-2