Is Preserve Code Formatting safe to use?

Laskyr does not give safety verdicts. No known unpatched vulnerabilities in the latest version (5.0). As of 2026-11-04. 1 issue is on record for older versions; version 5.0 or newer fixes all of them that state a fix. Keep Preserve Code Formatting on the latest version (5.0) and remove it if you do not use it.

Which versions of Preserve Code Formatting are vulnerable?

Known issues on record (newest first): PHP object injection (4.0.1 and older, fixed in 5.0). The full list with sources is on this page.

What is the latest version of Preserve Code Formatting?

5.0, according to wordpress.org (last updated 2025-08-15). It has 400+ active installs.

What should I do if my Preserve Code Formatting is out of date?

Take a backup, then update it from Dashboard > Updates (or run wp plugin update preserve-code-formatting). If you cannot update right away, deactivate it until you can. If you think the site was already attacked, run a free scan at https://laskyr.com/scan.

Plugins · preserve-code-formatting · data as of 2026-11-04

Is Preserve Code Formatting safe? Known vulnerabilities and latest version

Latest version: 5.0
Last updated: 2025-08-15
Active installs: 400+
Known issues on record: 1
Unpatched in latest: 0
Tested up to WP: 6.8.12

Preserve formatting of code for display by preventing its modification by WordPress and other plugins while also retaining whitespace. — by Scott Reilly

What to do

Update to the latest version (5.0). Anything older than 5.0 has at least one known issue listed below. Dashboard → Updates, or Plugins → “update now”.
If you cannot update right away, deactivate it until you can.
Turn on auto-updates for it: Plugins → “Enable auto-updates” on its row.
If you ran a vulnerable version and something looks off (spam pages, strange admins, redirects), run the free scan.

With WP-CLI: wp plugin get preserve-code-formatting --field=version shows what you run; wp plugin update preserve-code-formatting updates it.

Check your version

Known vulnerabilities

1 on record, newest first. “Affected” is the version range the source gives; “fixed in” is the version the source names, or (marked *) the first wordpress.org release after the last affected version.

high 8.8 CVE-2025-49386 · published 2025-11-06

PHP object injection in Preserve Code Formatting (4.0.1 and older)

Affected: 4.0.1 and older
Fixed in: 5.0
Access needed (per CVSS): Needs a low-level account (e.g. subscriber)
Range from: CVE record (the advisory publisher) · score by Patchstack

Details from the advisory

Deserialization of Untrusted Data vulnerability in Scott Reilly Preserve Code Formatting preserve-code-formatting allows Object Injection.This issue affects Preserve Code Formatting: from n/a through <= 4.0.1.

NVD CVE-2025-49386 Patchstack advisory

Recent activity

2025-08-15 — latest release on wordpress.org (5.0).
2025-11-06 — PHP object injection disclosed (CVE-2025-49386), fixed in 5.0.

Free. We check the CVE feeds every day and email you only when a new issue for Preserve Code Formatting (preserve-code-formatting) is published or a fix ships. Unsubscribe in one click.

Browse vulnerabilities

Types found in this plugin: PHP object injection (1)

Where this data comes from

Version, last update, installs: wordpress.org/plugins/preserve-code-formatting (Plugins API), fetched 2026-11-04.
Vulnerabilities: NIST National Vulnerability Database (NVD), checked 2026-11-04. This product uses data from the NVD API but is not endorsed or certified by the NVD.
Each record links to its CVE page and to the original advisory (Wordfence, Patchstack or WPScan) where there is one. We only list a CVE here when its references or its advisory name this exact plugin, so a few real issues may be missing; none should be about a different plugin. Spot an error? Email Daniel.

Badge for your site or docs (states facts with a date, not a verdict):

<a href="https://laskyr.com/plugins/preserve-code-formatting"><img src="https://laskyr.com/plugins/preserve-code-formatting/badge.svg" alt="Preserve Code Formatting vulnerability status"></a>

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