Zulip Server 1.5.1 and below suffer from an error in the implementation of the invite_by_admins_only setting in the Zulip group chat application server that allowed an authenticated user to invite other users to join a Zulip organization even if the organization was configured to prevent this
Published Jun 2, 2017
6.5
MEDIUMCVSS 3.0
EPSS 1.28%
Description
Zulip Server 1.5.1 and below suffer from an error in the implementation of the invite_by_admins_only setting in the Zulip group chat application server that allowed an authenticated user to invite other users to join a Zulip organization even if the organization was configured to prevent this.
Affected products
-
- Version 1.5.1 and belowStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Zulip | Zulip Server | n/a |
|
- 1.3.0
- 1.3.1
- 1.3.2
- 1.3.3
- 1.3.4
- 1.3.6
- 1.3.7
- 1.3.8
- 1.3.9
- 1.3.10
- 1.3.11
- 1.3.12
- 1.3.13
- 1.4.0
- 1.4.1
- 1.4.2
- 1.4.3
- 1.5.0
- 1.5.1
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.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
AV:N/AC:L/Au:S/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.28% (0.01278) | 68.92th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.28% (0.01278) | 68.68th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.07% (0.00069) | 30.51th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.07% (0.00069) | 30.37th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.07% (0.00069) | 28.30th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.20th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00890) | 30.33th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00890) | 12.04th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
References (3)
- https://github.com/zulip/zulip/commit/1f48fa27672170bba3b9a97384905bb04c18761b x_refsource_MISCIssue TrackingPatch
- https://groups.google.com/forum/#%21msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ mailing-listx_refsource_MLIST
- https://hackerone.com/reports/224210 x_refsource_MISCPermissions Required
| Link | Providers | Tags |
|---|---|---|
| https://github.com/zulip/zulip/commit/1f48fa27672170bba3b9a97384905bb04c18761b | x_refsource_MISCIssue TrackingPatch | |
| https://groups.google.com/forum/#%21msg/zulip-announce/sUYeJv-fFmg/2TU2TLmNAwAJ | mailing-listx_refsource_MLIST | |
| https://hackerone.com/reports/224210 | x_refsource_MISCPermissions Required |
Change history (0)
No recorded changes yet.