Medium severity · published Apr 17, 2023
CVE-2023-30540
Chat poll data can still be queried from API after purging history in Nextcloud talk
4.3
CVSS
0.7%
EPSS
No
On KEV
Description
Nextcloud Talk is a chat, video & audio call extension for Nextcloud. In affected versions a user that was added later to a conversation can use this information to get access to data that was deleted before they were added to the conversation. This issue has been patched in version 15.0.5 and it is recommended that users upgrad to 15.0.5. There are no known workarounds for this issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 51% 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, < 15.0.5 · source: vendor
TA
Talk · Nextcloud
15.0.0 before 15.0.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-30540
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-30540
Vendor Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-c9hr-cq65-9mjw
Patch
https://github.com/nextcloud/spreed/pull/8985
Permissions Required
https://hackerone.com/reports/1894676
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