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    CVE-2026-113793

    pypdf is a free and open-source pure-python PDF library. Prior to 6.20.1, removing an object from a crafted cyclic PDF tree, such as an outline item, can enter an infinite loop and block the current process. This issue is fixed in version 6.20.1.

    Published:Oct 21, 2026
    Last Modified:Oct 28, 2026
    EPS:Oct 21, 2026
    EPSS Score:0.00466
    CVSS Score:5.5

    Affected Products

    Vendor
    Py-pdf
    Product
    Pypdf

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-119204 (CVSS 7.1) — pypdf is a free and open-source pure-python PDF library. Prior to 6.21.4, pypdf can consume excessive memory w…
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    CVE-2026-115585 (CVSS 7.1) — pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an incomplete remediation for repeat…
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    CVE-2026-115572 (CVSS 7.1) — pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF that rep…

    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