CVE-2017-0881 json
An error in the implementation of an autosubscribe feature in the check_stream_exists route of the Zulip group chat application server befo…
published 2017-03-28 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-1235
- cvss
- 4.3
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 65%
- public exploits
- 0
- none known
Summary
An error in the implementation of an autosubscribe feature in the check_stream_exists route of the Zulip group chat application server before 1.4.3 allowed an authenticated user to subscribe to a private stream that should have required an invitation from an existing member to join. The issue affects all previously released versions of the Zulip server.
Patch / fix
- zulip zulip_server 1.4.3
Exploit prediction
1.10% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 4.3 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
Affected products
- n/a Zulip Server Versions 1.4.2 and below
Classification
References
-
github.com
/zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255f
patch, third-party-advisory
-
groups.google.com
/d/msg/zulip-announce/VyawgRuoY34/NTBwnTArGwAJ
patch, release-notes, third-party-advisory
-
securityfocus.com
/bid/97159
vdb-entry, third-party-advisory, vendor-advisory
Sources
- CVE List CVE-2017-0881
- NVD CVE-2017-0881
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