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    2 vulnerabilities found for python-markdown2 by trentm

    CVE-2026-118694 (GCVE-0-2026-118694)

    Vulnerability from nvd – Published: 2026-10-28 21:11 – Updated: 2026-10-29 17:22
    VLAI
    Title
    python-markdown2 through 2.5.5 Denial of Service via Unclosed Inline Link Destinations
    Summary
    python-markdown2 through 2.5.5 contains a denial of service vulnerability that allows remote users to exhaust CPU by submitting Markdown with unclosed inline link destinations. Attackers can submit repeated '[a](' or '![a](' sequences, causing _find_balanced to rescan the remaining document for each link and consume quadratic CPU time.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
    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 2026-10-29 15:43 UTC
    CWE
    • CWE-407 - Inefficient Algorithmic Complexity
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 7609 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    trentm python-markdown2 Affected: 0 , ≤ 2.5.5 (custom)
        cpe:2.3:a:python-markdown2_project:python-markdown2:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2026-10-28 00:00
    Credits
    Muhammadyusuf Dilmurodov (agrresore) ParamTanna
    Show details on NVD website
    To clipboard 

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    CVE-2026-118694 (GCVE-0-2026-118694)

    Vulnerability from cvelistv5 – Published: 2026-10-28 21:11 – Updated: 2026-10-29 17:22
    VLAI
    Title
    python-markdown2 through 2.5.5 Denial of Service via Unclosed Inline Link Destinations
    Summary
    python-markdown2 through 2.5.5 contains a denial of service vulnerability that allows remote users to exhaust CPU by submitting Markdown with unclosed inline link destinations. Attackers can submit repeated '[a](' or '![a](' sequences, causing _find_balanced to rescan the remaining document for each link and consume quadratic CPU time.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
    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 2026-10-29 15:43 UTC
    CWE
    • CWE-407 - Inefficient Algorithmic Complexity
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 7609 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    trentm python-markdown2 Affected: 0 , ≤ 2.5.5 (custom)
        cpe:2.3:a:python-markdown2_project:python-markdown2:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2026-10-28 00:00
    Credits
    Muhammadyusuf Dilmurodov (agrresore) ParamTanna
    Show details on NVD website
    To clipboard 

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