Medium severity4.3NVD Advisory· Published Mar 28, 2017· Updated Jun 17, 2026
CVE-2017-0881
CVE-2017-0881
Description
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.
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Affected products
2Patches
Vulnerability mechanics
References
3- github.com/zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255fnvdPatchThird Party Advisory
- groups.google.com/d/msg/zulip-announce/VyawgRuoY34/NTBwnTArGwAJnvdPatchRelease NotesThird Party Advisory
- www.securityfocus.com/bid/97159nvdThird Party AdvisoryVendor Advisory
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