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    2 vulnerabilities by room34

    CVE-2026-9838 (GCVE-0-2026-9838)

    Vulnerability from nvd – Published: 2026-07-10 08:30 – Updated: 2026-07-10 14:04
    VLAI
    Title
    ICS Calendar <= 12.0.9 - Reflected Cross-Site Scripting via 'htmltagtitle' Parameter
    Summary
    The ICS Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'htmltagtitle' parameter in all versions up to, and including, 12.0.9 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The vulnerability is reachable via the unauthenticated wp_ajax_nopriv_r34ics_ajax AJAX action, which accepts attacker-controlled js_args values merged over stored shortcode configuration without nonce verification, allowing the htmltagtitle key to bypass the normal shortcode allowlist check.
    Severity
    6.1 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    room34 ICS Calendar Affected: 0 , ≤ 12.0.9 (semver)
    		Create a notification for this product.
    Credits
    Khanh Nguyen
    Show details on NVD website
    To clipboard 

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    CVE-2026-9838 (GCVE-0-2026-9838)

    Vulnerability from cvelistv5 – Published: 2026-07-10 08:30 – Updated: 2026-07-10 14:04
    VLAI
    Title
    ICS Calendar <= 12.0.9 - Reflected Cross-Site Scripting via 'htmltagtitle' Parameter
    Summary
    The ICS Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'htmltagtitle' parameter in all versions up to, and including, 12.0.9 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The vulnerability is reachable via the unauthenticated wp_ajax_nopriv_r34ics_ajax AJAX action, which accepts attacker-controlled js_args values merged over stored shortcode configuration without nonce verification, allowing the htmltagtitle key to bypass the normal shortcode allowlist check.
    Severity
    6.1 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    room34 ICS Calendar Affected: 0 , ≤ 12.0.9 (semver)
    		Create a notification for this product.
    Credits
    Khanh Nguyen
    Show details on NVD website
    To clipboard 

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