CVE-2023-45149

Password of talk conversations can be bruteforced in Nextcloud

MEDIUM
4.3
CVSS Score
Published: October 16, 2023 at 07:03 PM UTC
Updated: June 17, 2026 at 06:28 AM UTC
1 product affected across 1 vendorTalk

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.6%
SSVC
PoC

Description

Nextcloud talk is a chat module for the Nextcloud server platform. In affected versions brute force protection of public talk conversation passwords can be bypassed, as there was an endpoint validating the conversation password without registering bruteforce attempts. It is recommended that the Nextcloud Talk app is upgraded to 15.0.8, 16.0.6 or 17.1.1. 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%
15.0.0 ≤ v < 15.0.816.0.0 ≤ v < 16.0.617.0.0 ≤ v < 17.1.1
Affected range stops below 15.0.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 17.1.1, 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

SSVCPoCNot automatablePartial impact

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

CVSS

4.3MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-307

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