Is RTL Tester safe to use?

Laskyr does not give safety verdicts. The latest version (1.2) has 1 known unpatched vulnerability. As of 2026-11-04, the sources we check list the newest release of RTL Tester as affected and name no fixed version yet. Keep RTL Tester on the latest version (1.2) and remove it if you do not use it.

Which versions of RTL Tester are vulnerable?

Known issues on record (newest first): Cross-site request forgery (CSRF) (1.2 and older). The full list with sources is on this page.

What is the latest version of RTL Tester?

1.2, according to wordpress.org (last updated 2020-08-11). It has 1,000+ active installs.

What should I do if my RTL Tester is out of date?

Take a backup, then update it from Dashboard > Updates (or run wp plugin update rtl-tester). 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 · rtl-tester · data as of 2026-11-04

Is RTL Tester safe? Known vulnerabilities and latest version

Latest version: 1.2
Last updated: 2020-08-11
Active installs: 1,000+
Known issues on record: 1
Unpatched in latest: 1
Tested up to WP: 5.5.24

Test your themes and plugins in RTL mode. — by Yoav Farhi

What to do

There is no fixed version yet. If you can live without RTL Tester for now, deactivate it and delete it until the developer ships a fix.
If you must keep it, limit who can log in (remove unused accounts, especially low-level ones) and put a web application firewall in front of the site.
Watch for an update: get an email when this page changes.
If you ran a vulnerable version and something looks off (spam pages, strange admins, redirects), run the free scan, or have us clean it: Emergency Cleanup, $499.

With WP-CLI: wp plugin get rtl-tester --field=version shows what you run; wp plugin update rtl-tester 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.

medium 4.3 affects latest 1.2 CVE-2025-64239 · published 2025-12-16

Cross-site request forgery (CSRF) in RTL Tester (1.2 and older)

Affected: 1.2 and older
Fixed in: no fix listed yet
Access needed (per CVSS): No login needed; someone on the site has to click a link or open a page
Range from: CVE record (the advisory publisher) · score by Patchstack

Details from the advisory

Cross-Site Request Forgery (CSRF) vulnerability in Yoav Farhi RTL Tester rtl-tester allows Cross Site Request Forgery.This issue affects RTL Tester: from n/a through <= 1.2.

NVD CVE-2025-64239 Patchstack advisory

Recent activity

2020-08-11 — latest release on wordpress.org (1.2).
2025-12-16 — Cross-site request forgery (CSRF) disclosed (CVE-2025-64239), no fix listed yet.

Free. We check the CVE feeds every day and email you only when a new issue for RTL Tester (rtl-tester) is published or a fix ships. Unsubscribe in one click.

Browse vulnerabilities

Types found in this plugin: Cross-site request forgery (CSRF) (1)

Where this data comes from

Version, last update, installs: wordpress.org/plugins/rtl-tester (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/rtl-tester"><img src="https://laskyr.com/plugins/rtl-tester/badge.svg" alt="RTL Tester vulnerability status"></a>

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