What’s Vulnerable › Vulnerabilities

CVE-2019-15620

• Severity: low (CVSS 2.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-02-04 · updated 2026-06-17
• Weakness: CWE-287

Description

Improper access control in Nextcloud Talk 6.0.3 leaks the existance and the name of private conversations when linked them to another shared item via the projects feature.

Affected products

• Nextcloud Talk: before 6.0.4 — fixed in 6.0.4

How to fix

Upgrade to a fixed version: Nextcloud Talk 6.0.4. Check the vendor advisory for mitigations.

References

• https://hackerone.com/reports/662218
• https://nextcloud.com/security/advisory/?id=NC-SA-2020-011
• https://hackerone.com/reports/662218
• https://nextcloud.com/security/advisory/?id=NC-SA-2020-011

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