CVE-2023-48307

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    CVE-2023-48307

    Published: 21 Nov 2023Last Modified: 12 Aug 2026

    Summary: Nextcloud Mail app vulnerable to Server-Side Request Forgery

    Details: Nextcloud Mail is the mail app for Nextcloud, a self-hosted productivity platform. Starting in version 1.13.0 and prior to version 2.2.8 and 3.3.0, an attacker can use an unprotected endpoint in the Mail app to perform a SSRF attack. Nextcloud Mail app versions 2.2.8 and 3.3.0 contain a patch for this issue. As a workaround, disable the mail app.

    References: https://hackerone.com/reports/1869714, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/48xxx/CVE-2023-48307.json, https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4pp4-m8ph-2999, https://nvd.nist.gov/vuln/detail/CVE-2023-48307, https://github.com/nextcloud/mail/pull/8709

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- b303777415ae004ac6fb1508897fea290eafb9c7
    Fixed -806f64a349f75b1ecd7871ea7aea4a11ed815774

    Affected versions

    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-2023-48307 | CVE-DB