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    CVE-2025-56761

    Memos 0.22 is vulnerable to Stored Cross site scripting (XSS) vulnerabilities by the upload attachment and user avatar features. Memos does not verify the content type of the uploaded data and serve it back as is. An authenticated attacker can use this to elevate their privileges when the stored XSS is viewed by an admin.

    Published:Sep 3, 2025
    Last Modified:Sep 9, 2025
    EPS:Sep 3, 2025
    EPSS Score:0.00039
    CVSS Score:5.4

    Affected Products

    Vendor
    Usememos
    Product
    Memos

    Exploits

    https://www.sonarsource.com/blog/securing-go-applications-with-sonarqube-real-world-examples/

    Related CVEs

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    CVE-2026-71272 (CVSS 8.5) — Memos' webhook dispatch function safeDialContext (internal/webhook/webhook.go) resolves the target hostname vi…
    CVE-2026-71271 (CVSS 8.5) — Memos' webhook URL validation, isReservedIP (internal/webhook/validate.go), checks a candidate IP against a re…
    CVE-2026-30586 (CVSS 6.1) — Cross Site Scripting vulnerability in usememos Memos v.0.26.0 allows a remote attacker to obtain sensitive inf…
    CVE-2026-6634 (CVSS 2.1) — A weakness has been identified in usememos memos up to 0.22.1. This affects the function memos_access_token of…
    CVE-2025-65799 (CVSS 4.3) — A lack of file name validation or verification in the Attachment service of usememos memos v0.25.2 allows atta…
    CVE-2025-65795 (CVSS 7.5) — Incorrect access control in the /api/v1/user endpoint of usememos memos v0.25.2 allows unauthorized attackers …

    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