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Vulnerability record · CVE-2022-24751 · published 16 March 2022

CVE-2022-24751: Zulip race condition vulnerability

Zulip · Zulip

Zulip is an open source group chat application. Starting with version 4.0 and prior to version 4.11, Zulip is vulnerable to a race condition during account deactivation, where a simultaneous access by the user being deactivated may, in rare cases, allow continued access by the deactivated user. A patch is available in version 4.11 on the 4.x branch and version 5.0-rc1 on the 5.x branch. Upgrading to a fixed version will, as a side effect, deactivate any cached sessions that may have been leaked through this bug. There are currently no known workarounds.

7.4 CVSS 3.1 High EPSS 0.96% · top 40.2% CWE-362 · Race condition
7.4CVSS 3.1 base score, v2 5.8
0.96%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 group chat application. Starting with version 4.0 and prior to version 4.11, Zulip is vulnerable to a race condition during account deactivation, where a simultaneous access by the user being deactivated may, in rare cases, allow continued access by the deactivated user. A patch is available in version 4.11 on the 4.x branch and version 5.0-rc1 on the 5.x branch. Upgrading to a fixed version will, as a side effect, deactivate any cached sessions that may have been leaked through this bug. There are currently no known workarounds.

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

Affected products

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

References

LinkTags
https://github.com/zulip/zulip/commit/62ba8e455d8f460001d9fb486a6dabfd1ed67717 PatchThird Party Advisory
https://github.com/zulip/zulip/commit/e6eace307ef435eec3395c99247155efed9219e4 PatchThird Party Advisory
https://github.com/zulip/zulip/security/advisories/GHSA-6v98-m5x5-phqj Third Party Advisory
https://github.com/zulip/zulip/commit/62ba8e455d8f460001d9fb486a6dabfd1ed67717 PatchThird Party Advisory
https://github.com/zulip/zulip/commit/e6eace307ef435eec3395c99247155efed9219e4 PatchThird Party Advisory
https://github.com/zulip/zulip/security/advisories/GHSA-6v98-m5x5-phqj Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2022-24751), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.