Race condition in Zulip
Published Mar 16, 2022
7.4
HIGHCVSS 3.1
EPSS 0.95%
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.
Affected products
-
- Version >= 4.0, < 4.11StatusaffectedConstraints-
- Version
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
1 other source (GitHub) ▾
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Apr 23, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.95% (0.00955) | 59.98th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.92% (0.00917) | 55.37th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.16% (0.00164) | 35.00th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.17% (0.00166) | 54.65th | v3 (v2023.03.01) |
| Aug 27, 2023 | 0.11% (0.00114) | 44.31th | v3 (v2023.03.01) |
| Apr 18, 2023 | 0.11% (0.00106) | 41.88th | v3 (v2023.03.01) |
| Mar 23, 2023 | 0.10% (0.00099) | 39.45th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00071) | 28.68th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Mar 23, 2022 | 0.95% (0.00954) | 17.36th | v2 (v2022.01.01) |
| Mar 17, 2022 | 0.89% (0.00890) | 13.03th | v2 (v2022.01.01) |
References (3)
- https://github.com/zulip/zulip/commit/62ba8e455d8f460001d9fb486a6dabfd1ed67717 x_refsource_MISCPatchThird Party Advisory
- https://github.com/zulip/zulip/commit/e6eace307ef435eec3395c99247155efed9219e4 x_refsource_MISCPatchThird Party Advisory
- https://github.com/zulip/zulip/security/advisories/GHSA-6v98-m5x5-phqj x_refsource_CONFIRMThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/zulip/zulip/commit/62ba8e455d8f460001d9fb486a6dabfd1ed67717 | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/zulip/zulip/commit/e6eace307ef435eec3395c99247155efed9219e4 | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/zulip/zulip/security/advisories/GHSA-6v98-m5x5-phqj | x_refsource_CONFIRMThird Party Advisory |
Change history (0)
No recorded changes yet.