CVE-2020-8138

A missing check for IPv4 nested inside IPv6 in Nextcloud server < 17.0.1, < 16.0.7, and < 15.0.14 allowed a Server-Side Request Forgery (SSRF) vulnerability when subscribing to a malicious calendar URL.

CVSS v3.1

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0

4.0 MEDIUMAV:N/AC:L/Au:S/C:P/I:N/A:N

EPSS

1.40% chance of exploitation in the next 30 days, 70th percentile

Published

2020-03-20

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://hackerone.com/reports/736867

References

• CVE Record
• NVD entry

Related

• CVE-2020-8137
• CVE-2020-8140
• CVE-2020-8136
• CVE-2020-8141
• CVE-2020-8135
• CVE-2020-8142