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    CVE-2026-87818

    GitPython 3.1.59 fails to restrict the --no-index option in the high-level diff API, allowing attackers to read arbitrary filesystem paths as repository operands. Attackers can combine --no-index with -I/--ignore-matching-lines to create a content-dependent Boolean oracle, repeatedly querying local files to recover single-line secrets through distinguishable success or error responses.

    Published:Sep 9, 2026
    Last Modified:Sep 10, 2026
    EPS:Sep 9, 2026
    EPSS Score:
    CVSS Score:6.5

    Affected Products

    Vendor
    Gitpython-developers
    Product
    Gitpython
    Vendor
    Gitpython Project
    Product
    Gitpython

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-76222 (CVSS 8.4) — GitPython before 3.1.58 fails to validate submodule names from .gitmodules files, allowing attackers to create…
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    CVE-2026-73625 (CVSS 8.7) — GitPython versions before 3.1.54 contain a remote code execution vulnerability in the check_unsafe_options gua…
    CVE-2026-73624 (CVSS 7.2) — GitPython versions before 3.1.54 contain an arbitrary file overwrite vulnerability in the Diffable.diff method…
    CVE-2026-73623 (CVSS 7.7) — GitPython before 3.1.54 contains an incomplete denylist in unsafe_git_clone_options that omits --template, all…
    CVE-2026-73622 (CVSS 8.7) — GitPython before 3.1.55 fails to disable environment variable expansion in Remote.create() and Submodule.add()…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
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    Changed
    Confidentiality
    None
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    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High