CVE intelligence and bounded remediation

CVE-2023-5810 — A vulnerability, which was classified as problematic, has been found in flusity CMS

Medium CVSS 4.8

A vulnerability, which was classified as problematic, has been found in flusity CMS. This issue affects the function loadPostAddForm of the file core/tools/posts.php. The manipulation of the argument edit_post_id leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The identifier of the patch is 6943991c62ed87c7a57989a0cb7077316127def8. It is recommended to apply a patch to fix this issue. The identifier VDB-243641 was assigned to this vulnerability.

Severity
Medium
CVSS
4.8 (3.1)
Published
2023-10-27
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-79

Affected products

  • flusity / flusity

Matched remediation archetype

Cross-site scripting and unsafe browser output

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Check exposure

  • Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
  • Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
  • Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.

Remediate safely

  • Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
  • Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
  • Update affected rendering components and add tests for every output context using inert sentinel markup.

Authoritative sources

Complete CVE record and remediation plan

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