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    2 vulnerabilities by ring-clojure

    CVE-2026-62864 (GCVE-0-2026-62864)

    Vulnerability from nvd – Published: 2026-10-30 20:34 – Updated: 2026-11-02 15:05
    VLAI
    Title
    Ring's nested-params middleware has inefficient regular expression complexity
    Summary
    Ring is a Clojure web applications library inspired by Python's WSGI and Ruby's Rack. Prior to 1.15.5, `wrap-nested-params` in the `ring.middleware.nested-params` namespace uses a backtracking regular expression to match parameter names from URL query strings and HTTP request bodies. An attacker can craft a parameter name that drives quadratic O(n^2) matching work, causing regular-expression denial of service in applications using the middleware. `Ring-Defaults` users are also exposed because nested-params is enabled by default. Applications omitting the middleware do not expose this parsing path. This issue is fixed in version 1.15.5.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-02 15:04 UTC
    CWE
    • CWE-1333 - Inefficient Regular Expression Complexity
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7982 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    ring-clojure ring Affected: < 1.15.5
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-62864 (GCVE-0-2026-62864)

    Vulnerability from cvelistv5 – Published: 2026-10-30 20:34 – Updated: 2026-11-02 15:05
    VLAI
    Title
    Ring's nested-params middleware has inefficient regular expression complexity
    Summary
    Ring is a Clojure web applications library inspired by Python's WSGI and Ruby's Rack. Prior to 1.15.5, `wrap-nested-params` in the `ring.middleware.nested-params` namespace uses a backtracking regular expression to match parameter names from URL query strings and HTTP request bodies. An attacker can craft a parameter name that drives quadratic O(n^2) matching work, causing regular-expression denial of service in applications using the middleware. `Ring-Defaults` users are also exposed because nested-params is enabled by default. Applications omitting the middleware do not expose this parsing path. This issue is fixed in version 1.15.5.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-02 15:04 UTC
    CWE
    • CWE-1333 - Inefficient Regular Expression Complexity
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7982 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    ring-clojure ring Affected: < 1.15.5
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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