CVE-2025-51503

A Stored Cross-Site Scripting (XSS) vulnerability in Microweber CMS 2.0 allows attackers to inject malicious scripts into user profile fields, leading to arbitrary JavaScript execution in admin browsers.

Published: 2025-07-31 Last update: 2025-08-06 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-51503 is rated Moderate Risk (54.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.52%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-51503

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-27 0.15% 0.52% +0.37%
2 2026-04-16 0.06% 0.15% +0.09%
3 2025-08-01 — 0.06% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-51503

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.6 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 2.8 4.7 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-51503

GitHub Security Advisory for CVE-2025-51503

GHSA-782f-gxj5-xvqc · Severity: low · Ecosystem: composer — Microweber Has Stored XSS Vulnerability in User Profile Fields

Affected software / configurations for CVE-2025-51503

Vendor Product Version Raw CPE
microweber microweber 2.0.0 cpe:2.3:a:microweber:microweber:2.0.0:*:*:*:*:*:*:*

References for CVE-2025-51503

cvelogic Threat Intelligence