Is Varnish/Nginx Proxy Caching safe to use?

Laskyr does not give safety verdicts. The latest version (1.8.3) has 2 known unpatched vulnerabilities. As of 2026-11-04, the sources we check list the newest release of Varnish/Nginx Proxy Caching as affected and name no fixed version yet. Keep Varnish/Nginx Proxy Caching on the latest version (1.8.3) and remove it if you do not use it.

Which versions of Varnish/Nginx Proxy Caching are vulnerable?

Known issues on record (newest first): Information disclosure (1.8.3 and older); Stored cross-site scripting (XSS) (1.8.3 and older). The full list with sources is on this page.

What is the latest version of Varnish/Nginx Proxy Caching?

1.8.3, according to wordpress.org (last updated 2019-10-21). It has 600+ active installs.

What should I do if my Varnish/Nginx Proxy Caching is out of date?

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

Is Varnish/Nginx Proxy Caching safe? Known vulnerabilities and latest version

Latest version: 1.8.3
Last updated: 2019-10-21
Active installs: 600+
Known issues on record: 2
Unpatched in latest: 2
Tested up to WP: 5.2.30 · PHP 5.2.4+

Wordpress Varnish Cache 3.x/4.x/5.x and Nginx Proxy Cache integration — by Razvan Stanga

What to do

There is no fixed version yet. If you can live without Varnish/Nginx Proxy Caching 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 vcaching --field=version shows what you run; wp plugin update vcaching updates it.

Check your version

Known vulnerabilities

2 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 5.3 affects latest 1.8.3 CVE-2025-62126 · published 2025-12-31

Information disclosure in Varnish/Nginx Proxy Caching (1.8.3 and older)

Affected: 1.8.3 and older
Fixed in: no fix listed yet
Access needed (per CVSS): No login needed
Range from: CVE record (the advisory publisher) · score by Patchstack

Details from the advisory

Insertion of Sensitive Information Into Sent Data vulnerability in Razvan Stanga Varnish/Nginx Proxy Caching vcaching allows Retrieve Embedded Sensitive Data.This issue affects Varnish/Nginx Proxy Caching: from n/a through <= 1.8.3.

NVD CVE-2025-62126 Patchstack advisory

medium 5.9 affects latest 1.8.3 CVE-2025-48360 · published 2025-08-28

Stored cross-site scripting (XSS) in Varnish/Nginx Proxy Caching (1.8.3 and older)

Affected: 1.8.3 and older
Fixed in: no fix listed yet
Access needed (per CVSS): Needs an admin-level account; 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

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Razvan Stanga Varnish/Nginx Proxy Caching vcaching allows Stored XSS.This issue affects Varnish/Nginx Proxy Caching: from n/a through <= 1.8.3.

NVD CVE-2025-48360 Patchstack advisory

Recent activity

2019-10-21 — latest release on wordpress.org (1.8.3).
2025-12-31 — Information disclosure disclosed (CVE-2025-62126), no fix listed yet.
2025-08-28 — Stored cross-site scripting (XSS) disclosed (CVE-2025-48360), no fix listed yet.

Free. We check the CVE feeds every day and email you only when a new issue for Varnish/Nginx Proxy Caching (vcaching) is published or a fix ships. Unsubscribe in one click.

Browse vulnerabilities

Types found in this plugin: Sensitive data exposure (1) · Cross-site scripting (XSS) (1)

Where this data comes from

Version, last update, installs: wordpress.org/plugins/vcaching (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/vcaching"><img src="https://laskyr.com/plugins/vcaching/badge.svg" alt="Varnish/Nginx Proxy Caching vulnerability status"></a>

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