Cross-Site Scripting (XSS) in Intermark IT's WebControl CMS (CVE-2026-6953)
Summary
Cross-site scripting in Intermark IT's WebControl CMS (CVE-2026-6953). Risk of unauthorized operations or information disclosure.
Original description
The description as published by the source.
HTML injection vulnerability in Intermark IT's WebControl CMS v3.5. This vulnerability allows an attacker to send an email containing malicious HTML code to a victim via the contact form. To exploit this vulnerability, the attacker must send a request using the 'nombreApellidos', 'dirección ', and 'comentarios ' parameters to '/processContact.do'.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-6953 has been found in Intermark IT's WebControl CMS.
Risk of unauthorized operations or information disclosure.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Intermark IT's WebControl CMS CVE-2026-6953" on the vendor's site.
CVE-2026-6953 (Intermark IT's WebControl CMS) — CWE-79
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) exists in Intermark IT's WebControl CMS.
Check the vendor advisory for the affected versions of Intermark IT's WebControl CMS.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Intermark IT's WebControl CMS を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- web nvd.nist.gov
- web cve-coordination@incibe.es
- web github.com