CVE-2023-45660

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    CVE-2023-45660

    Published: 16 Oct 2023Last Modified: 28 Oct 2026

    Summary: Require strict cookies for image proxy requests in Nextcloud Mail

    Details: Nextcloud mail is an email app for the Nextcloud home server platform. In affected versions a missing check of origin, target and cookies allows for an attacker to abuse the proxy endpoint to denial of service a third server. It is recommended that the Nextcloud Mail is upgraded to 2.2.8 or 3.3.0. There are no known workarounds for this vulnerability.

    References: https://hackerone.com/reports/1895874, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45660.json, https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8j9x-fmww-qr37, https://nvd.nist.gov/vuln/detail/CVE-2023-45660, https://github.com/nextcloud/mail/pull/8459

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- e57d2891a69ec6851cc4e3782c0a9f7e0eb52c80
    Fixed -806f64a349f75b1ecd7871ea7aea4a11ed815774

    Affected versions

    v2.2.7
    v2.2.6
    v2.2.5
    v2.2.4
    v2.2.3
    v2.2.2
    v2.2.1
    v2.2.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2023-45660 | CVE-DB