CVE-2021-25120

Easy Social Feed <= 6.2.6 - Reflected Cross-Site Scripting

2022-04-11 00:00

Strategic Overview

Status: Patched in 6.2.7
Affected Plugin: Easy Social Feed – Social Photos Gallery and Post Feed for WordPress
Affected Version: <= 6.2.6
CVSS: 6.1Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2021-25120

View all Easy Social Feed – Social Photos Gallery and Post Feed for WordPress vulnerabilities

At a glance

CVE-2021-25120 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Easy Social Feed WordPress plugin, affecting versions <= 6.2.6. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 6.2.7; sites on affected versions should update now. Disclosed April 2022, reported by Thura Moe Myint (mgthuramoemyint).

Vulnerability Overview

The Easy Social Feed Free and Pro WordPress plugins before 6.2.7 do not sanitise some of their parameters used via AJAX actions before outputting them back in the response, leading to Reflected Cross-Site Scripting issues

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in Easy Social Feed <= 6.2.6 takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Easy Social Feed the fix is 6.2.7: builds <= 6.2.6 are affected, anything from 6.2.7 onward is not.

Remediation

Update to version 6.2.7, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Easy Social Feed: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Easy Social Feed 6.2.7 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-25120 https://www.wordfence.com/threat-intel/vulnerabilities/id/24c7e7da-39b4-4969-b24f-be7a8628236b https://nvd.nist.gov/vuln/detail/CVE-2021-25120

Related records

Same weakness class

Other vulnerabilities in Easy Social Feed – Social Photos Gallery and Post Feed for WordPress

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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