Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue <= 3.1.30 - Reflected Cross-Site Scripting via lang & pid Parameters

2022-01-12 00:00

ZhongFu Su

Strategic Overview

Status

Patched in 3.1.31

Affected PluginBrevo – Email, SMS, Web Push, Chat, and more.

Affected Version< 3.1.31

CVSS6.1Medium

CVECVE-2021-24874

View all Brevo – Email, SMS, Web Push, Chat, and more. vulnerabilities

Vulnerability Overview

The Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue WordPress plugin before 3.1.31 does not escape the lang and pid parameter before outputting them back in attributes, leading to Reflected Cross-Site Scripting issues

Technical Analysis

REMEDIATION: Update to version 3.1.31, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24874 https://www.wordfence.com/threat-intel/vulnerabilities/id/8173596d-a127-4dc1-a72a-640381536c67

CVSS Vector

6.1

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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