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    8 vulnerabilities by cthackers

    CVE-2026-102282 (GCVE-0-2026-102282)

    Vulnerability from nvd – Published: 2026-10-05 17:00 – Updated: 2026-10-07 20:53
    VLAI
    Title
    adm-zip extraction preserves SUID/SGID bits from untrusted ZIPs -> local privilege escalation
    Summary
    adm-zip is a JavaScript library for creating and extracting ZIP archives in Node.js. Prior to 0.6.1, adm-zip applies the Unix permission bits stored in a zip entry directly to the extracted file via `fs.chmodSync()` when `keepOriginalPermission=true` is passed to `extractAllTo()`/`extractEntryTo()` — and it never filters the setuid/setgid/sticky bits out of those bits. A zip crafted by an attacker can therefore produce an extracted binary with mode `04755`. When extraction runs as root (the default posture in Docker builds, CI runners, and privileged install steps — the exact environments where this flag is used), the resulting root-owned setuid file is executed later by a lesser-privileged user, turning the attacker's code into a root execution. Version 0.6.1 fixes the issue.
    Severity
    7.1 (High)
    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-10-07 20:53 UTC
    CWE
    • CWE-732 - Incorrect Permission Assignment for Critical Resource
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7616 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    cthackers adm-zip Affected: < 0.6.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-77301 (GCVE-0-2026-77301)

    Vulnerability from nvd – Published: 2026-09-18 16:38 – Updated: 2026-09-18 17:11
    VLAI
    Title
    adm-zip: Uncontrolled memory allocation via the declared uncompressed size (DoS)
    Summary
    adm-zip is a JavaScript library for creating and extracting ZIP archives in Node.js. Prior to 0.6.1, getData() in zipEntry.js trusts an entry's central-directory uncompressed size and allocates output memory before validating that value against the actual compressed data and decompression result. A small crafted ZIP can declare a multi-gigabyte uncompressed size, causing Buffer.alloc and decompression handling to commit excessive resident memory before CRC validation reports an error. Applications that read entries from untrusted archives can therefore be terminated by the operating system or suffer service-wide memory exhaustion. This issue is fixed in version 0.6.1.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 17:10 UTC
    CWE
    • CWE-789 - Memory Allocation with Excessive Size Value
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7616 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    cthackers adm-zip Affected: < 0.6.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-92000 (GCVE-0-2026-92000)

    Vulnerability from nvd – Published: 2026-09-15 20:56 – Updated: 2026-09-24 14:22
    VLAI
    Title
    adm-zip 0.5.14 through 0.6.0 Denial of Service via Zero Declared Uncompressed Size
    Summary
    adm-zip versions 0.5.14 through 0.6.0 fail to apply zlib decompression output limits when ZIP entries declare zero uncompressed size. Attackers can craft malicious ZIP archives with highly compressible entries declaring zero size to exhaust memory and cause denial of service.
    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 2026-09-17 19:15 UTC
    CWE
    • CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 5277 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    cthackers adm-zip Affected: 0.5.14 , < 0.6.1 (semver)
        cpe:2.3:a:adm-zip_project:adm-zip:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2026-09-11 00:00
    Credits
    Dilipkumar Choudhary
    Show details on NVD website
    To clipboard 

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    CVE-2026-76845 (GCVE-0-2026-76845)

    Vulnerability from nvd – Published: 2026-08-24 13:12 – Updated: 2026-08-24 16:25
    VLAI
    Title
    adm-zip 0.5.9 through 0.6.0 Arbitrary File Overwrite via Symlink Following on Extraction
    Summary
    adm-zip 0.5.9 through 0.6.0 follows symbolic links at the extraction destination. Utils.sanitize in util/utils.js enforces containment by comparing only the string form of an archive entry name against the resolved extraction root, and Utils.writeFileTo opens the computed destination with fs.openSync(path, "w", 0o666), which resolves symbolic links and carries neither O_NOFOLLOW nor a pre-write fs.lstatSync check. When a path component at the destination already exists as a symbolic link pointing outside the extraction root, extractAllTo, extractAllToAsync and extractEntryTo write the entry contents through that link and then chmod its target, placing attacker-controlled content in a file outside the root without any traversal sequence appearing in the archive. Reaching the write requires overwrite to be enabled, because the preceding fs.existsSync check also resolves the link and otherwise declines. An attacker able to create a symbolic link inside a shared, reused or predictable extraction directory, such as a temporary directory or a continuous integration workspace, can overwrite any file the extracting process is permitted to write.
    Severity
    6.8 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
    6.5 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-24 16:25 UTC
    CWE
    • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 5277 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    cthackers adm-zip Affected: 0.5.9 , ≤ 0.6.0 (semver)
        cpe:2.3:a:adm-zip_project:adm-zip:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2026-08-18 00:00
    Credits
    Muhammad Sobirov
    Show details on NVD website
    To clipboard 

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    CVE-2026-102282 (GCVE-0-2026-102282)

    Vulnerability from cvelistv5 – Published: 2026-10-05 17:00 – Updated: 2026-10-07 20:53
    VLAI
    Title
    adm-zip extraction preserves SUID/SGID bits from untrusted ZIPs -> local privilege escalation
    Summary
    adm-zip is a JavaScript library for creating and extracting ZIP archives in Node.js. Prior to 0.6.1, adm-zip applies the Unix permission bits stored in a zip entry directly to the extracted file via `fs.chmodSync()` when `keepOriginalPermission=true` is passed to `extractAllTo()`/`extractEntryTo()` — and it never filters the setuid/setgid/sticky bits out of those bits. A zip crafted by an attacker can therefore produce an extracted binary with mode `04755`. When extraction runs as root (the default posture in Docker builds, CI runners, and privileged install steps — the exact environments where this flag is used), the resulting root-owned setuid file is executed later by a lesser-privileged user, turning the attacker's code into a root execution. Version 0.6.1 fixes the issue.
    Severity
    7.1 (High)
    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-10-07 20:53 UTC
    CWE
    • CWE-732 - Incorrect Permission Assignment for Critical Resource
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7616 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    cthackers adm-zip Affected: < 0.6.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-77301 (GCVE-0-2026-77301)

    Vulnerability from cvelistv5 – Published: 2026-09-18 16:38 – Updated: 2026-09-18 17:11
    VLAI
    Title
    adm-zip: Uncontrolled memory allocation via the declared uncompressed size (DoS)
    Summary
    adm-zip is a JavaScript library for creating and extracting ZIP archives in Node.js. Prior to 0.6.1, getData() in zipEntry.js trusts an entry's central-directory uncompressed size and allocates output memory before validating that value against the actual compressed data and decompression result. A small crafted ZIP can declare a multi-gigabyte uncompressed size, causing Buffer.alloc and decompression handling to commit excessive resident memory before CRC validation reports an error. Applications that read entries from untrusted archives can therefore be terminated by the operating system or suffer service-wide memory exhaustion. This issue is fixed in version 0.6.1.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 17:10 UTC
    CWE
    • CWE-789 - Memory Allocation with Excessive Size Value
    Assigner
    GitHub_M CNA under the mitre root
    CNA scorecard C 72/100 over 7616 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    cthackers adm-zip Affected: < 0.6.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-92000 (GCVE-0-2026-92000)

    Vulnerability from cvelistv5 – Published: 2026-09-15 20:56 – Updated: 2026-09-24 14:22
    VLAI
    Title
    adm-zip 0.5.14 through 0.6.0 Denial of Service via Zero Declared Uncompressed Size
    Summary
    adm-zip versions 0.5.14 through 0.6.0 fail to apply zlib decompression output limits when ZIP entries declare zero uncompressed size. Attackers can craft malicious ZIP archives with highly compressible entries declaring zero size to exhaust memory and cause denial of service.
    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 2026-09-17 19:15 UTC
    CWE
    • CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 5277 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    cthackers adm-zip Affected: 0.5.14 , < 0.6.1 (semver)
        cpe:2.3:a:adm-zip_project:adm-zip:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2026-09-11 00:00
    Credits
    Dilipkumar Choudhary
    Show details on NVD website
    To clipboard 

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    CVE-2026-76845 (GCVE-0-2026-76845)

    Vulnerability from cvelistv5 – Published: 2026-08-24 13:12 – Updated: 2026-08-24 16:25
    VLAI
    Title
    adm-zip 0.5.9 through 0.6.0 Arbitrary File Overwrite via Symlink Following on Extraction
    Summary
    adm-zip 0.5.9 through 0.6.0 follows symbolic links at the extraction destination. Utils.sanitize in util/utils.js enforces containment by comparing only the string form of an archive entry name against the resolved extraction root, and Utils.writeFileTo opens the computed destination with fs.openSync(path, "w", 0o666), which resolves symbolic links and carries neither O_NOFOLLOW nor a pre-write fs.lstatSync check. When a path component at the destination already exists as a symbolic link pointing outside the extraction root, extractAllTo, extractAllToAsync and extractEntryTo write the entry contents through that link and then chmod its target, placing attacker-controlled content in a file outside the root without any traversal sequence appearing in the archive. Reaching the write requires overwrite to be enabled, because the preceding fs.existsSync check also resolves the link and otherwise declines. An attacker able to create a symbolic link inside a shared, reused or predictable extraction directory, such as a temporary directory or a continuous integration workspace, can overwrite any file the extracting process is permitted to write.
    Severity
    6.8 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
    6.5 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-24 16:25 UTC
    CWE
    • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 5277 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    cthackers adm-zip Affected: 0.5.9 , ≤ 0.6.0 (semver)
        cpe:2.3:a:adm-zip_project:adm-zip:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2026-08-18 00:00
    Credits
    Muhammad Sobirov
    Show details on NVD website
    To clipboard 

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