CVE-2021-41180

Geolocation preview links can be set to arbitrary links in nextcloud talk

MEDIUM
6.1
CVSS Score
Published: March 8, 2022 at 05:45 PM UTC
Updated: June 17, 2026 at 04:08 AM UTC
1 product affected across 1 vendorTalk

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Severity
MEDIUM6.1
Exploit prediction
EPSS 1%
SSVC
PoC

Description

Nextcloud talk is a self hosting messaging service. In versions prior 12.1.2 an attacker is able to control the link of a geolocation preview in the Nextcloud Talk application due to a lack of validation on the link. This could result in an open-redirect, but required user interaction. This only affected users of the Android Talk client. It is recommended that the Nextcloud Talk App is upgraded to 12.1.2. There are no known workarounds.

Affected

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

Talk· Nextcloudnextcloud-app
95%
v < 12.1.2
Affected range stops below 12.1.2, 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:

References (3)

x_refsource_MISCPatchThird Party Advisory
https://github.com/nextcloud/spreed/pull/6239
x_refsource_MISCExploitPatchThird Party Advisory
https://hackerone.com/reports/1337178

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

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

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-601

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