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    CVE-2026-70427

    Jenkins 2.575 and earlier, LTS 2.568.1 and earlier does not safely handle symbolic links with effectively empty names during the extraction of `.tar` and `.tar.gz` archives, allowing attackers able to control agent processes to provide crafted archives to the controller to write files to arbitrary locations on the file system, restricted only by file system access permissions of the user running Jenkins.

    Published:Aug 5, 2026
    Last Modified:Sep 8, 2026
    EPS:Aug 5, 2026
    EPSS Score:0.00248
    CVSS Score:4.3

    Affected Products

    Vendor
    Jenkins
    Product
    Jenkins
    Vendor
    Jenkins Project
    Product
    Jenkins

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-70429 (CVSS 6.5) — Jenkins 2.575 and earlier, LTS 2.568.1 and earlier handles case-insensitivity in user names and group names in…
    CVE-2026-70430 (CVSS 2.7) — Jenkins 2.575 and earlier, LTS 2.568.1 and earlier does not restrict the types of objects that can be instanti…
    CVE-2026-70428 (CVSS 4.3) — Jenkins 2.575 and earlier, LTS 2.568.1 and earlier improperly identifies file paths attempting path traversal …
    CVE-2026-53442 (CVSS 5.3) — Jenkins 2.567 and earlier, LTS 2.555.2 and earlier does not encrypt secrets from POST config.xml submissions b…
    CVE-2026-53441 (CVSS 5.4) — Jenkins 2.483 through 2.567 (both inclusive), LTS 2.492.1 through 2.555.2 (both inclusive) does not escape the…
    CVE-2026-53440 (CVSS 4.3) — Jenkins 2.567 and earlier, LTS 2.555.2 and earlier does not ensure that the "from" parameter in the "Delegate …
    CVE-2026-53439 (CVSS 4.3) — Missing permission checks in Jenkins 2.567 and earlier, LTS 2.555.2 and earlier allow attackers with Overall/R…
    CVE-2026-53438 (CVSS 4.3) — A missing permission check in Jenkins 2.567 and earlier, LTS 2.555.2 and earlier allows attackers with Item/Ca…
    CVE-2026-53437 (CVSS 4.3) — Jenkins 2.567 and earlier, LTS 2.555.2 and earlier improperly determines that a redirect URL after login is le…
    CVE-2026-53436 (CVSS 4.3) — Jenkins 2.567 and earlier, LTS 2.555.2 and earlier improperly determines that a redirect URL after login is le…

    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