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    CVE-2026-121413

    Parse Server before 8.6.112 and 9.0.0 before 9.10.6-alpha.4 contains an authorization bypass in the session upgrade endpoint, which creates a new session for any valid session token without enforcing the _Session class create class-level permission. Attackers holding a user's session token can send an already revocable token to /upgradeToRevocableSession to obtain additional sessions with fresh expiration that persist after the original session is logged out.

    Published:Nov 3, 2026
    Last Modified:Nov 3, 2026
    EPS:Nov 3, 2026
    EPSS Score:
    CVSS Score:3.1

    Affected Products

    Vendor
    Parse Community
    Product
    Parse Server
    Vendor
    Parseplatform
    Product
    Parse-server

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-863 Incorrect Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-120310 (CVSS 2.3) — Parse Server before 8.6.109 and 9.0.0 before 9.10.6-alpha.1 returns stored field values in object update respo…
    CVE-2026-119571 (CVSS 6.3) — Parse Server from 9.7.0 before 9.10.5-alpha.10 contains an authorization flaw that applies _Installation updat…
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    CVE-2026-119569 (CVSS 6) — Parse Server before 8.6.108 and 9.0.0 before 9.10.5-alpha.9 contains a prototype pollution vulnerability becau…
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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