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    CVE-2024-3179

    Concrete CMS version 9 before 9.2.8 and previous versions before 8.5.16 are vulnerable to Stored XSS in the Custom Class page editing. Prior to the fix, a rogue administrator could insert malicious code in the custom class field due to insufficient validation of administrator provided data. The Concrete CMS security team gave this vulnerability a CVSS v3.1 score of 3.1 with a vector of AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator . Thanks Alexey Solovyev for reporting.

    Published:Apr 3, 2024
    Last Modified:Dec 16, 2024
    EPS:Apr 3, 2024
    EPSS Score:0.00104
    CVSS Score:3.1

    Affected Products

    Vendor
    Concretecms
    Product
    Concrete Cms

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-18121 (CVSS 6.3) — Concrete CMS 9.5.2 and below is vulnerable to an authorization bypass (IDOR) because the frontend calendar lig…
    CVE-2026-84432 (CVSS 5.3) — Concrete CMS 9 through 9.5.2 did not validate an anti-CSRF token in the Boards custom slot dialog controller …
    CVE-2026-68527 (CVSS 5.9) — Concrete CMS versions 8.3.0 through 9.5.2 are vulnerable to an authorization bypass in the Calendar event edit…
    CVE-2026-81904 (CVSS 6.3) — Concrete CMS below 9.5.3 registered view assets for every sub-block of a Stack, Container, or layout area with…
    CVE-2026-10721 (CVSS 8.4) — Concrete CMS below 9.5.2 is vulnerable to PHP Object Injection via unserialize() calls in the  in Permission, …
    CVE-2026-7888 (CVSS 8.4) — Concrete CMS below 9.5.2 is vulnerable to PHP Object Injection via unserialize() calls in the Workflow, Form b…
    CVE-2026-8353 (CVSS 2.1) — Concrete CMS version 9.0 to 9.5.0 is vulnerable to Stored XSS via page name in the Atomik theme. A rogue edito…
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    References

    https://documentation.concretecms.org/9-x/developers/introduction/version-history/928-release-notes?_gl=1*1bcxp5s*_ga*MTc1NDc0Njk2Mi4xNzA2ODI4MDU1*_ga_HFB3HPNNLS*MTcxMjE2NjYyNi4xMy4xLjE3MTIxNjY2ODEuMC4wLjA.
    https://documentation.concretecms.org/developers/introduction/version-history/8516-release-notes?_gl=1*1oa3zn1*_ga*MTc1NDc0Njk2Mi4xNzA2ODI4MDU1*_ga_HFB3HPNNLS*MTcxMjE2NjYyNi4xMy4xLjE3MTIxNjY3MDcuMC4wLjA.
    https://documentation.concretecms.org/9-x/developers/introduction/version-history/928-release-notes?_gl=1*1bcxp5s*_ga*MTc1NDc0Njk2Mi4xNzA2ODI4MDU1*_ga_HFB3HPNNLS*MTcxMjE2NjYyNi4xMy4xLjE3MTIxNjY2ODEuMC4wLjA.
    https://documentation.concretecms.org/developers/introduction/version-history/8516-release-notes?_gl=1*1oa3zn1*_ga*MTc1NDc0Njk2Mi4xNzA2ODI4MDU1*_ga_HFB3HPNNLS*MTcxMjE2NjYyNi4xMy4xLjE3MTIxNjY3MDcuMC4wLjA.

    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