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    CVE-2026-53504

    Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the convolution filter regular expression performs exponential backtracking on crafted repeated numeric input, allowing a URL request to exhaust processing time. This issue is fixed in 7.8.0.

    Published:Jul 31, 2026
    Last Modified:Aug 2, 2026
    EPS:Jul 31, 2026
    EPSS Score:0.00335
    CVSS Score:7.5

    Affected Products

    Vendor
    Thumbor
    Product
    Thumbor

    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