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    2 vulnerabilities found for microdot by miguelgrinberg

    CVE-2026-42874 (GCVE-0-2026-42874)

    Vulnerability from nvd – Published: 2026-05-11 19:04 – Updated: 2026-05-13 14:40
    VLAI
    Title
    Microdot: HTTP response splitting in Response.set_cookie()
    Summary
    Microdot is a minimalistic Python web framework. Prior to 2.6.1, the Response.set_cookie() method does not sanitize its string arguments, and in particular will not detect the presence of the \r\n sequence in them. This can be a potential source of header injection attacks. For a header injection attack through this issue to be possible, an attacker must first infiltrate the client (for example through an independent XSS attack), so that it can send malicious information that is destined to be stored in a cookie by the server on behalf of the victim. An attacker that infiltrates one client can only orchestrate a header injection attack for that client, all other clients that were not infiltrated are safe. This vulnerability is fixed in 2.6.1.
    Severity
    3.7 (Low)
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    miguelgrinberg microdot Affected: < 2.6.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-42874 (GCVE-0-2026-42874)

    Vulnerability from cvelistv5 – Published: 2026-05-11 19:04 – Updated: 2026-05-13 14:40
    VLAI
    Title
    Microdot: HTTP response splitting in Response.set_cookie()
    Summary
    Microdot is a minimalistic Python web framework. Prior to 2.6.1, the Response.set_cookie() method does not sanitize its string arguments, and in particular will not detect the presence of the \r\n sequence in them. This can be a potential source of header injection attacks. For a header injection attack through this issue to be possible, an attacker must first infiltrate the client (for example through an independent XSS attack), so that it can send malicious information that is destined to be stored in a cookie by the server on behalf of the victim. An attacker that infiltrates one client can only orchestrate a header injection attack for that client, all other clients that were not infiltrated are safe. This vulnerability is fixed in 2.6.1.
    Severity
    3.7 (Low)
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    miguelgrinberg microdot Affected: < 2.6.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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