要点
- CVE-2026-3241 は concrete5/concrete5, concrete cms (concretecms) に影響する深刻度「中」 (CVSS 4.8) の脆弱性です。
- 今後30日間に悪用される確率（EPSS）：0.24%（全脆弱性の 14.9% より高い）。
- 対処：9.4.8 以降に更新してください。
概要
In Concrete CMS below version 9.4.8, a Cross-site Scripting (XSS) vulnerability exists in the "Legacy Form" block. An authenticated user with permissions to create or edit forms (e.g., a rogue administrator) can inject a persistent JavaScript payload into the options of a multiple-choice question (Checkbox List, Radio Buttons, or Select Box). This payload is then executed in the browser of any user who views the page containing the form.
The Concrete CMS security team thanks M3dium for reporting.
NVD の説明
In Concrete CMS below version 9.4.8, a stored cross-site scripting (XSS) vulnerability exists in the "Legacy Form" block. An authenticated user with permissions to create or edit forms (e.g., a rogue administrator) can inject a persistent JavaScript payload into the options of a multiple-choice question (Checkbox List, Radio Buttons, or Select Box). This payload is then executed in the browser of any user who views the page containing the form. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 4.8 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks M3dium for reporting.
concrete5/concrete5 のその他の脆弱性
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