CVE-2018-3761
HIGH
8.1
CVSS Score
Published: July 5, 2018 at 04:00 PM UTC
Updated: June 17, 2026 at 01:57 AM UTC
1 product affected across 1 vendorNextcloud/server
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Severity
HIGH8.1
Exploit prediction
EPSS 2%
Description
Nextcloud Server before 12.0.8 and 13.0.3 suffer from improper authentication on the OAuth2 token endpoint. Missing checks potentially allowed handing out new tokens in case the OAuth2 client was partly compromised.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Nextcloud/server· Nextcloudnextcloud-app
95%v < 12.0.8v < 13.0.313.0.0 ≤ v < 13.0.3
Affected range stops below 12.0.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 13.0.3, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_CONFIRMBroken LinkVendor Advisory
Source: [email protected]
https://nextcloud.com/security/advisory/?id=nc-sa-2018-003CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-287
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