Reported vulnerability

WordPress Core < 5.9.2 & Gutenberg < 12.7.2 - Prototype Pollution via Block Editor

Published 11 Mar 2022

Updated 22 Jan 2024

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WordPress (WordPress core)

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Wordfence advisory

medium · CVSS 5.4

WordPress Core in various versions < 5.9.2 and Gutenberg versions less than 12.7.2 are vulnerable to prototype pollution via the block editor which could make injecting malicious web scripts possible in some cases.

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

WordPress

Software
WordPress Core · wordpress
Affected versions
Start version unspecified, before 3.7; From 3.7, through 3.7.37; From 3.8, through 3.8.37; From 3.9, through 3.9.35; From 4.0, through 4.0.34; From 4.1, through 4.1.34; From 4.2, through 4.2.31; From 4.3, through 4.3.27; From 4.4, through 4.4.26; From 4.5, through 4.5.25; From 4.6, through 4.6.22; From 4.7, through 4.7.22; From 4.8, through 4.8.18; From 4.9, through 4.9.19; From 5.0, through 5.0.15; From 5.1, through 5.1.12; From 5.2, through 5.2.14; From 5.3, through 5.3.11; From 5.4, through 5.4.9; From 5.5, through 5.5.8; From 5.6, through 5.6.7; From 5.7, through 5.7.5; From 5.8, through 5.8.3; From 5.9, through 5.9.1
Fix availability
Fix available
Fixed versions
3.7.38, 3.8.38, 3.9.36, 4.0.35, 4.1.35, 4.2.32, 4.3.28, 4.4.27, 4.5.26, 4.6.23, 4.7.23, 4.8.19, 4.9.20, 5.0.16, 5.1.13, 5.2.15, 5.3.12, 5.4.10, 5.5.9, 5.6.8, 5.7.6, 5.8.4, 5.9.2

Recommended action

Update to one of the following versions, or a newer patched version: 3.7.38, 3.8.38, 3.9.36, 4.0.35, 4.1.35, 4.2.32, 4.3.28, 4.4.27, 4.5.26, 4.6.23, 4.7.23, 4.8.19, 4.9.20, 5.0.16, 5.1.13, 5.2.15, 5.3.12, 5.4.10, 5.5.9, 5.6.8, 5.7.6, 5.8.4, 5.9.2

Gutenberg

Software
plugin · gutenberg
Affected versions
Start version unspecified, before 12.7.2
Fix availability
Fix available
Fixed versions
12.7.2

Recommended action

Update to version 12.7.2, or a newer patched version

Further references (1)
Data sources and licences

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Source: Wordfence

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Questions about this vulnerability

How do I check which product and version this report affects?

This report covers more than one product. Choose your plugin, theme or WordPress core in the version checker, then enter its installed version. Each product has its own affected ranges and fix details in the report above.

Which update should I install?

Find your exact product in the report and read its fixed versions and recommended action. Fix details for one product do not apply to every product covered by this advisory. Follow the linked source when no fixed version is specified.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

Does a version outside these ranges mean my website is secure?

A version outside the reported ranges is not listed as affected by this particular issue. Other vulnerabilities, missing information or a previous compromise still need separate checks. Review other reports for your product and keep your website maintained.

Other reports for the same product

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

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