CVE-2020-8138
MEDIUM
6.5
CVSS Score
Published: March 20, 2020 at 08:12 PM UTC
Updated: June 17, 2026 at 03:25 AM UTC
1 product affected across 1 vendorNextcloud/server
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Severity
MEDIUM6.5
Exploit prediction
EPSS 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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Nextcloud/server· Nextcloudnextcloud-app
95%v < 15.0.1416.0.0 ≤ v < 16.0.717.0.0 ≤ v < 17.0.2
Affected range stops below 15.0.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.7, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 17.0.2 (unaffected)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (2)
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://hackerone.com/reports/736867x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://nextcloud.com/security/advisory/?id=NC-SA-2020-014CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-918
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