CVE-2023-6446

Calculated Fields Form <= 1.2.40 - Authenticated (Admin+) Stored Cross-Site Scripting

2023-12-05 00:00

Strategic Overview

Status: Patched in 1.2.41
Affected Plugin: Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More
Affected Version: <= 1.2.40
CVSS: 4.4Medium
Weakness type: CWE-87 · Improper Neutralization of Alternate XSS Syntax
CVE: CVE-2023-6446

View all Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More vulnerabilities

At a glance

CVE-2023-6446 is a medium-severity Improper Neutralization of Alternate XSS Syntax vulnerability in the Calculated Fields Form WordPress plugin, affecting versions <= 1.2.40. It carries a CVSS score of 4.4 (reachable over the network). Exploitation requires an authenticated account at Admin level or above. The issue is fixed in version 1.2.41; sites on affected versions should update now. Disclosed December 2023, reported by emad.

Vulnerability Overview

The Calculated Fields Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 1.2.40 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, and no interaction from a victim user.

CWE-87: Improper Neutralization of Alternate XSS Syntax

The product does not neutralize or incorrectly neutralizes user-controlled input for alternate script syntax.

Remediation

Update to version 1.2.41, or a newer patched version

How does WordSec protect against this?

An attacker needs Admin access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Calculated Fields Form 1.2.41 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-6446 https://www.wordfence.com/threat-intel/vulnerabilities/id/c879123c-531e-43d8-a7d3-16a3c86b68a3 https://nvd.nist.gov/vuln/detail/CVE-2023-6446

Related records

Other vulnerabilities in Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More

CVSS Vector

4.4

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

Base

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredHigh
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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