What is the CVSS score of CVE-2025-65956?

CVE-2025-65956 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L. EPSS exploitation probability: 0.0%.

Which versions of Formwork are affected by CVE-2025-65956?

Organizations using Formwork should be aware of notable risk from CVE-2025-65956, a cross-site scripting vulnerability rated CVSS 6.5.. A patch is available.

Is there a public PoC exploit available for CVE-2025-65956?

Yes, a public proof-of-concept exploit is available for CVE-2025-65956. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-65956?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Formwork CVE-2025-65956

MEDIUM

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

2025-11-26 security-advisories@github.com

XSS Formwork

6.5

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

6.5 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:24 vuln.today

Patch released

Mar 28, 2026 - 19:24 nvd

Patch available

PoC Detected

Dec 03, 2025 - 20:30 vuln.today

Public exploit code

CVE Published

Nov 26, 2025 - 00:15 nvd

MEDIUM 6.5

DescriptionGitHub Advisory

Formwork is a flat file-based Content Management System (CMS). Prior to version 2.2.0, inserting unsanitized data into the blog tag field results in stored cross‑site scripting (XSS). Any user with credentials to the Formwork CMS who accesses or edits an affected blog post will have attacker‑controlled script executed in their browser. The issue is persistent and impacts privileged administrative workflows. This issue has been patched in version 2.2.0.

AnalysisAI

Formwork is a flat file-based Content Management System (CMS). Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Formwork is a flat file-based Content Management System (CMS). Prior to version 2.2.0, inserting unsanitized data into the blog tag field results in stored cross‑site scripting (XSS). Any user with credentials to the Formwork CMS who accesses or edits an affected blog post will have attacker‑controlled script executed in their browser. The issue is persistent and impacts privileged administrative workflows. This issue has been patched in version 2.2.0. Affected products include: Formwork Project Formwork. Version information: version 2.2.0.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

CVE-2025-65956 vulnerability details – vuln.today

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