CVE-2023-28845

Chat room membership disclosed via autocompletion in Nextcloud talk

LOW
3.5
CVSS Score
Published: March 31, 2023 at 10:13 PM UTC
Updated: June 17, 2026 at 05:48 AM UTC
1 product affected across 1 vendorTalk

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Severity
LOW3.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Talk· Nextcloudnextcloud-app
95%
14.0.0 ≤ v < 14.0.915.0.0 ≤ v < 15.0.4
Affected range stops below 14.0.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.5LOWGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-284NVD-CWE-noinfo

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