CVE-2026-120500

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    CVE-2026-120500

    Published: 2 Nov 2026Last Modified: 4 Nov 2026

    Summary: An Otter Wiki before 2.26.2 Stored XSS via Math Code Block

    Details: An Otter Wiki before 2.26.2 contains a stored cross-site scripting vulnerability in OtterwikiMdRenderer.block_code that allows attackers who can edit pages, including anonymous users under the default configuration, to inject arbitrary script. Attackers can place HTML inside a math fenced code block, which is rendered unescaped and executes for every viewer of the page.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120500.json, https://github.com/redimp/otterwiki/releases/tag/v2.26.2, https://nvd.nist.gov/vuln/detail/CVE-2026-120500, https://www.vulncheck.com/advisories/an-otter-wiki-before-2.26.2-stored-xss-via-math-code-block, https://github.com/redimp/otterwiki/commit/b2e91d20ed36c01ce140d18698f9abb90685d481, https://github.com/redimp/otterwiki

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 8cab0add15bbcda51461130c11a84e7b7722c4a9
    Fixed -82bd794a6bd92093a34172df1af5e4e7e1827f95

    Affected versions

    v2.26.1
    v2.26.0

    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-2026-120500 | CVE-DB