CVE-2020-8138

MEDIUM

Nextcloud Server < 15.0.14 - Server-Side Request Forgery via Malicious Calendar URL Subscription

Title source: llm
STIX 2.1

Description

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.

References (2)

Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://hackerone.com/reports/736867
Third Party Advisory x_refsource_confirm
https://nextcloud.com/security/advisory/?id=NC-SA-2020-014

Scores

CVSS v3 6.5
EPSS 0.0022
EPSS Percentile 44.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-918
Status published
Products (1)
nextcloud/nextcloud_server < 15.0.14
Published Mar 20, 2020
Tracked Since Feb 18, 2026