CVE-2026-53757

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    CVE-2026-53757

    Published: 4 Sept 2026Last Modified: 10 Sept 2026

    Summary: Emlog: Zip Slip Path Traversal in Plugin/Template ZIP Upload Enables RCE

    Details: Emlog is an open source website building system. In versions 2.6.29 and prior, the emUnZip() function extracts all ZIP entries via ZipArchive::extractTo() without validating entry paths for ../ traversal sequences. Only the first entry's subdirectory structure is checked. An attacker can overwrite arbitrary files on the server filesystem, including config.php for immediate RCE. At time of publication, there are no publicly known patches.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53757.json, https://github.com/emlog/emlog/security/advisories/GHSA-gjj4-37r4-mf5g, https://nvd.nist.gov/vuln/detail/CVE-2026-53757

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    pro-2.6.29
    pro-2.6.28
    pro-2.6.27
    pro-2.6.26
    pro-2.6.25
    pro-2.6.24
    pro-2.6.23
    pro-2.6.22
    pro-2.6.21
    pro-2.6.20
    pro-2.6.19
    pro-2.6.18
    pro-2.6.17
    pro-2.6.16
    pro-2.6.15
    pro-2.6.14
    pro-2.6.13
    pro-2.6.12
    pro-2.6.11
    pro-2.6.10
    pro-2.6.9
    pro-2.6.8
    pro-2.6.7
    pro-2.6.6
    pro-2.6.5
    pro-2.6.4
    pro-2.6.3
    pro-2.6.2
    pro-2.6.1
    pro-2.6.0

    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-2026-53757 | CVE-DB