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    2 vulnerabilities by composefs

    CVE-2026-70622 (GCVE-0-2026-70622)

    Vulnerability from nvd – Published: 2026-08-10 17:35 – Updated: 2026-08-11 02:01 X_Open Source
    VLAI
    Title
    tar-rs 0.4.11 - 0.4.46 Symlink Escape via append_dir_all()
    Summary
    tar-rs versions 0.4.11 through 0.4.46 contain a symlink escape vulnerability in the Builder::append_dir_all() function that allows attackers to read files outside the intended source root directory by planting symlinks in an attacker-controlled directory. When a privileged process archives an untrusted directory, the function follows symlinks without verifying that resolved targets remain within the source root, causing out-of-bounds files to be included in the archive as regular files and disclosed to the attacker.
    Severity
    7.1 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 02:01 UTC
    CWE
    • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
    Assigner
    References
    Impacted products
    Vendor Product Version
    composefs tar-rs Affected: 0.4.11 , ≤ 0.4.46 (semver)
    		Create a notification for this product.
    Date Public
    2026-08-07 00:00
    Credits
    Ali Firas (thesmartshadow)
    Show details on NVD website
    To clipboard 

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    CVE-2026-70622 (GCVE-0-2026-70622)

    Vulnerability from cvelistv5 – Published: 2026-08-10 17:35 – Updated: 2026-08-11 02:01 X_Open Source
    VLAI
    Title
    tar-rs 0.4.11 - 0.4.46 Symlink Escape via append_dir_all()
    Summary
    tar-rs versions 0.4.11 through 0.4.46 contain a symlink escape vulnerability in the Builder::append_dir_all() function that allows attackers to read files outside the intended source root directory by planting symlinks in an attacker-controlled directory. When a privileged process archives an untrusted directory, the function follows symlinks without verifying that resolved targets remain within the source root, causing out-of-bounds files to be included in the archive as regular files and disclosed to the attacker.
    Severity
    7.1 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 02:01 UTC
    CWE
    • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
    Assigner
    References
    Impacted products
    Vendor Product Version
    composefs tar-rs Affected: 0.4.11 , ≤ 0.4.46 (semver)
    		Create a notification for this product.
    Date Public
    2026-08-07 00:00
    Credits
    Ali Firas (thesmartshadow)
    Show details on NVD website
    To clipboard 

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