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    CVE-2026-24408

    sigstore-python is a Python tool for generating and verifying Sigstore signatures. Prior to version 4.2.0, the sigstore-python OAuth authentication flow is susceptible to Cross-Site Request Forgery. `_OAuthSession` creates a unique "state" and sends it as a parameter in the authentication request but the "state" in the server response seems not not be cross-checked with this value. Version 4.2.0 contains a patch for the issue.

    Published:Jan 26, 2026
    Last Modified:Apr 18, 2026
    EPS:Jan 26, 2026
    EPSS Score:0.00006
    CVSS Score:0

    Affected Products

    Vendor
    Linuxfoundation
    Product
    Sigstore-python
    Vendor
    Sigstore
    Product
    Sigstore-python

    Exploits

    No exploit reference

    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