CVE intelligence and bounded remediation

CVE-2023-5837 — A vulnerability classified as problematic was found in AlexanderLivanov FotosCMS2 up to 2.4.3

Medium CVSS 6.1

A vulnerability classified as problematic was found in AlexanderLivanov FotosCMS2 up to 2.4.3. This vulnerability affects unknown code of the file profile.php of the component Cookie Handler. The manipulation of the argument username leads to cross site scripting. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. VDB-243802 is the identifier assigned to this vulnerability.

Severity
Medium
CVSS
6.1 (3.1)
Published
2023-10-28
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-79

Affected products

  • alexanderlivanov / fotoscms2

Matched remediation archetype

Cross-site scripting and unsafe browser output

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

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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