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    CVE-2026-71271

    Memos' webhook URL validation, isReservedIP (internal/webhook/validate.go), checks a candidate IP against a reservedCIDRs list that omits 0.0.0.0/8 and never calls ip.IsUnspecified — unlike the correctly implemented sibling function isInternalIP in internal/httpgetter/html_meta.go, which does.

    Published:Aug 5, 2026
    Last Modified:Aug 10, 2026
    EPS:Aug 5, 2026
    EPSS Score:0.00254
    CVSS Score:8.5

    Affected Products

    Vendor
    Usememos
    Product
    Memos

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

    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…
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    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