Is there a public PoC exploit available for CVE-2025-12330?

Yes, a public proof-of-concept exploit is available for CVE-2025-12330. Prioritise patching immediately. EPSS: 0.0%.

Willow CMS CVE-2025-12330

Q: What is the CVSS score of CVE-2025-12330?

CVE-2025-12330 has a CVSS 4.0 base score of 1.9 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

LOW

Cross-site Scripting (XSS) (CWE-79)

2025-10-27 cna@vuldb.com

XSS Willow Cms

1.9

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

1.9 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Scope

Lifecycle Timeline

Analysis Generated

Apr 29, 2026 - 02:33 vuln.today

DescriptionCVE.org

A security flaw has been discovered in Willow CMS up to 1.4.0. This issue affects some unknown processing of the file /admin/articles/add of the component Add Post Page. The manipulation of the argument title/body results in cross site scripting. The attack may be launched remotely. The exploit has been released to the public and may be exploited.

AnalysisAI

Stored cross-site scripting (XSS) in Willow CMS up to version 1.4.0 allows authenticated administrative users to inject malicious scripts via the title or body parameters in the Add Post Page (/admin/articles/add), which are then executed in the browsers of other users who view the post. The vulnerability requires high-privilege authentication and user interaction (visiting the affected page) to trigger, resulting in limited integrity impact. Public exploit code is available, though EPSS analysis indicates minimal real-world exploitation probability at 0.03%.

Technical ContextAI

The vulnerability exploits improper input validation and output encoding in Willow CMS's article creation functionality. The Add Post Page component fails to sanitize or escape user-supplied input in the title and body fields before storing them in the database and rendering them in HTML responses. This is a classic stored XSS vulnerability (CWE-79) where malicious payloads persist server-side and execute when retrieved by other users. The affected product is identified via CPE cpe:2.3:a:matthewdeaves:willow_cms:*:*:*:*:*:*:*:* with all versions up to 1.4.0 confirmed vulnerable.

RemediationAI

Upgrade Willow CMS to a patched version released after 1.4.0 (exact fix version not specified in available data; check the official GitHub repository at https://github.com/matthewdeaves/willow/issues/131 for the recommended version). If immediate upgrade is not feasible, implement server-side input validation and output encoding: ensure all user input in title and body fields is HTML-entity encoded before rendering in responses, and apply Content Security Policy (CSP) headers with script-src restrictions to mitigate XSS execution. Additionally, restrict access to /admin/articles/add to trusted administrative users only via role-based access control. Note that these compensating controls do not eliminate the vulnerability but reduce practical exploitability.

CVE-2025-12330 vulnerability details – vuln.today

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