CVE-2026-57715

HIGH

WordPress Fluent CRM plugin <= 3.1.7 - Cross Site Scripting (XSS) vulnerability

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-57715. PoCs published by incogbyte.

AI-analyzed exploit summary Reflected XSS vulnerability in FluentCRM <= 3.1.7 via unsanitized array keys in the `with[]` query parameter of the campaign detail REST endpoint. The exploit demonstrates how attacker-controlled markup flows unescaped into JSON error responses due to improper sanitization of array keys.

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPManageNinja Fluent CRM fluent-crm allows Reflected XSS.This issue affects Fluent CRM: from n/a through <= 3.1.7.

Exploits (1)

github WORKING POC 3 stars
by incogbyte · pythonpoc
https://github.com/incogbyte/wp-cve-exploits/tree/main/CVE-2026-57715

Reflected XSS vulnerability in FluentCRM <= 3.1.7 via unsanitized array keys in the `with[]` query parameter of the campaign detail REST endpoint. The exploit demonstrates how attacker-controlled markup flows unescaped into JSON error responses due to improper sanitization of array keys.

Classification
Working Poc 100%
Attack Type
Xss
Complexity
Moderate
Reliability
Reliable
Target: FluentCRM <= 3.1.7 (WordPress plugin)
Auth required
Prerequisites: Attacker must have access to an account with FluentCRM's `fcrm_read_emails` capability (Administrator by default) · Victim must click a crafted link while logged in
mistral-large-3 · analyzed Jul 14, 2026 Full analysis →

References (1)

Core 1

Scores

CVSS v3 7.1
EPSS 0.0018
EPSS Percentile 7.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
WPManageNinja/Fluent CRM < 3.1.7
Published Jul 13, 2026
Tracked Since Jul 13, 2026