Zulip: Saving a draft DM to a user bypasses can_access_all_users_group permission

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-115474
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-04 20:19:01 UTC
Updated2026-11-04 20:19:01 UTC
DescriptionZulip 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.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-862 | CWE-862 CWE-862: Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Zulip Zulip affected >= 8.0, < 12.2 Not specified

References

ReferenceSourceLinkTags
github.com/zulip/zulip/security/advisories/GHSA-vwqp-7j32-xfg5 [email protected] github.com
github.com/zulip/zulip/commit/83a4a3a966e6eef11914b80f04426ae114a1970d [email protected] github.com
github.com/zulip/zulip/releases/tag/12.2 [email protected] github.com
github.com/zulip/zulip/pull/39913 [email protected] github.com
github.com/zulip/zulip/commit/1127d4cd3cc17a3cc38435ce57ed52b083c33f97 [email protected] github.com
zulip.readthedocs.io/en/latest/overview/changelog.html [email protected] zulip.readthedocs.io
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