Low severity · published Mar 31, 2023
CVE-2023-28845
Chat room membership disclosed via autocompletion in Nextcloud talk
3.5
CVSS
0.4%
EPSS
No
On KEV
Description
Nextcloud talk is a video & audio conferencing app for Nextcloud. In affected versions the talk app does not properly filter access to a conversations member list. As a result an attacker could use this vulnerability to gain information about the members of a Talk conversation, even if they themselves are not members. It is recommended that the Nextcloud Talk is upgraded to 14.0.9 or 15.0.4. There are no known workarounds for this vulnerability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
security-advisories · nextcloud
>= 15.0.0, < 15.0.4; >= 14.0.0, < 14.0.9 · source: vendor
TA
Talk · Nextcloud
14.0.0 before 14.0.9; 15.0.0 before 15.0.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-28845
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-28845
Vendor Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3m6r-479j-4chf
Patch
https://github.com/nextcloud/spreed/pull/8651
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