CVE-2026-119208

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    CVE-2026-119208

    Published: 29 Oct 2026Last Modified: 5 Nov 2026

    Summary: pypdf: Possible long runtimes/large memory usage for encrypted PDF files

    Details: pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive time and memory when an application accesses the page count of a crafted encrypted PDF whose page tree declares a forged /Count value. Even after successful decryption, page-count retrieval trusts the unvalidated declared count instead of walking the page tree, allowing the attacker-controlled value to drive excessive work and memory use. This issue is fixed in version 6.21.3.

    References: https://github.com/py-pdf/pypdf/releases/tag/6.21.3, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119208.json, https://github.com/py-pdf/pypdf/security/advisories/GHSA-62m5-6wh8-28x7, https://nvd.nist.gov/vuln/detail/CVE-2026-119208, https://github.com/py-pdf/pypdf/commit/82b91951dc74496bb3efe6465434f041bb6a5e6b, https://github.com/py-pdf/pypdf/pull/4270

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -a9f9c4f16f1fb6b48be089ef6eae250dbaef5d23

    Affected versions

    6.21.2
    6.21.1
    6.21.0

    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
    CVE-2026-119208 | CVE-DB