CVE-2021-30487 json
In the topic moving API in Zulip Server 3.x before 3.4, organization administrators were able to move messages to streams in other organiza…
published 2021-04-14 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17409
- cvss
- 2.7
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
In the topic moving API in Zulip Server 3.x before 3.4, organization administrators were able to move messages to streams in other organizations hosted by the same Zulip installation.
Patch / fix
- zulip zulip_server 3.4
Exploit prediction
0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 2.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:P/A:N |
References
-
blog.zulip.com
/2021/04/14/zulip-server-3-4/
release-notes, vendor-advisory
Sources
- CVE List CVE-2021-30487
- NVD CVE-2021-30487
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