CVE-2024-10858

Jetpack 13.0 - 14.0 - Reflected DOM-based Cross-Site Scripting

2024-12-04 00:00

Strategic Overview

Status: Patched in 14.1
Affected Plugin: Jetpack – WP Security, Backup, Speed, & Growth
Affected Version: 13.0 – 14.0
CVSS: 6.1Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2024-10858

View all Jetpack – WP Security, Backup, Speed, & Growth vulnerabilities

At a glance

CVE-2024-10858 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Jetpack WordPress plugin, affecting versions 13.0 – 14.0. 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 14.1; sites on affected versions should update now. Disclosed December 2024, reported by Eldar.

Vulnerability Overview

The Jetpack – WP Security, Backup, Speed, & Growth plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 'postmessage' in versions 13.0 to 14.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The issue only affects websites hosted on WordPress.com.

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')

Jetpack 13.0 – 14.0 carries this weakness at postmessage, and reaching it 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 Jetpack the fix is 14.1: builds 13.0 – 14.0 are affected, anything from 14.1 onward is not.

Remediation

Update to version 14.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Jetpack: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Jetpack 14.1 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-10858 https://www.wordfence.com/threat-intel/vulnerabilities/id/aed02958-9397-4116-a46a-babc43997afd https://nvd.nist.gov/vuln/detail/CVE-2024-10858

Related records

Same weakness class

Other vulnerabilities in Jetpack – WP Security, Backup, Speed, & Growth

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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