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Vulnerability record · CVE-2022-31168 · published 22 July 2022

CVE-2022-31168: Zulip improper authorization vulnerability

Zulip · Zulip

Zulip is an open source team chat tool. Due to an incorrect authorization check in Zulip Server 5.4 and earlier, a member of an organization could craft an API call that grants organization administrator privileges to one of their bots. The vulnerability is fixed in Zulip Server 5.5. Members who don’t own any bots, and lack permission to create them, can’t exploit the vulnerability. As a workaround for the vulnerability, an organization administrator can restrict the `Who can create bots` permission to administrators only, and change the ownership of existing bots.

8.8 CVSS 3.1 High EPSS 0.80% · top 45.2% CWE-285 · Improper authorizationCWE-863 · Incorrect authorization
8.8CVSS 3.1 base score
0.80%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Zulip is an open source team chat tool. Due to an incorrect authorization check in Zulip Server 5.4 and earlier, a member of an organization could craft an API call that grants organization administrator privileges to one of their bots. The vulnerability is fixed in Zulip Server 5.5. Members who don’t own any bots, and lack permission to create them, can’t exploit the vulnerability. As a workaround for the vulnerability, an organization administrator can restrict the `Who can create bots` permission to administrators only, and change the ownership of existing bots.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/zulip/zulip/commit/751b2a03e565e9eb02ffe923b7c24ac73d604034 PatchThird Party Advisory
https://github.com/zulip/zulip/releases/tag/5.5 Release NotesThird Party Advisory
https://github.com/zulip/zulip/security/advisories/GHSA-c3cp-ggg5-9xw5 Third Party Advisory
https://github.com/zulip/zulip/commit/751b2a03e565e9eb02ffe923b7c24ac73d604034 PatchThird Party Advisory
https://github.com/zulip/zulip/releases/tag/5.5 Release NotesThird Party Advisory
https://github.com/zulip/zulip/security/advisories/GHSA-c3cp-ggg5-9xw5 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-31168), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.