CVE-2026-53758

    Dashboard / Vulnerabilities / CVE-2026-53758

    CVE-2026-53758

    Published: 4 Sept 2026Last Modified: 11 Sept 2026

    Summary: Emlog: Stored XSS via Parsedown Markdown Processing - Raw HTML Not Sanitized

    Details: Emlog is an open source website building system. In versions 2.6.29 and prior, article content is processed by Parsedown without enabling safe mode, which means raw HTML including <script> tags embedded in Markdown is passed through unescaped. The output is rendered with no additional sanitization, resulting in stored XSS visible to all site visitors. At time of publication, there are no publicly known patches.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53758.json, https://github.com/emlog/emlog/security/advisories/GHSA-35vc-2gv4-mw77, https://nvd.nist.gov/vuln/detail/CVE-2026-53758

    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-2026-53758 | CVE-DB