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VulnerabilityPublished

CVE-2025-51502: Microweber CMS · Cross-site Scripting

Source CVE Database V5

0

Not known to be exploited · public detection template (Nuclei) · CVSS 6.1 Medium.

Data as of 26 Oct 2026, 11:07 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.8% chance of exploitation in 30 days – higher than 58% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Aug 2025

  2. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  3. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  4. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

To mitigate this vulnerability, European organizations should immediately review and restrict access to the /admin/page/create page to trusted administrators only, ideally behind VPNs or secure network segments. Administrators should be trained to avoid clicking on suspicious links and to verify URLs before accessing admin pages. Implementing Content Security Policy (CSP) headers can help reduce the impact of XSS by restricting the execution of unauthorized scripts. Organizations should monitor web server and application logs for unusual requests involving the 'layout' parameter and suspicious admin page access patterns. Until an official patch is released by Microweber, consider applying web application firewall (WAF) rules to detect and block malicious payloads targeting the 'layout' parameter. Regularly update and audit CMS plugins and extensions to minimize additional attack surfaces. Finally, enforce strong authentication mechanisms such as multi-factor authentication (MFA) for admin accounts to reduce the risk of credential compromise.

Description

Reflected Cross-Site Scripting (XSS) in Microweber CMS 2.0 via the layout parameter on the /admin/page/create page allows arbitrary JavaScript execution in the context of authenticated admin users.

References

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