High severity · published Jul 28, 2022
CVE-2016-4427
In zulip before 1.3.12, deactivated users could access messages if SSO was enabled
7.5
CVSS
0.8%
EPSS
No
On KEV
Description
In zulip before 1.3.12, deactivated users could access messages if SSO was enabled.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZU
zulip ·
zulip 1.3.12 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-4427
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-4427
Release Notes
https://zulip.readthedocs.io/en/2.1.7/overview/changelog.html#id35
More from zulip
4.3
CVE-2016-4426
In zulip before 1.3.12, bot API keys were accessible to other users in the same realm