Is Image Sizes on Demand safe to use?

Laskyr does not give safety verdicts. Image Sizes on Demand is closed on wordpress.org. Closed on 2026-06-18 (reason given: Security Issue). Closed plugins get no updates through WordPress, so new security holes will not be fixed for you. Keep Image Sizes on Demand on the latest version and remove it if you do not use it.

Which versions of Image Sizes on Demand are vulnerable?

Known issues on record (newest first): Reflected cross-site scripting (XSS) (1.3 and older). The full list with sources is on this page.

What should I do if my Image Sizes on Demand is out of date?

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

Is Image Sizes on Demand safe? Known vulnerabilities and latest version

Status: Closed 2026-06-18
Known issues on record: 1
Unpatched in latest: 0

What to do

Replace it. A closed plugin gets no updates through WordPress, so any hole found from now on stays open.
Deactivate and delete it once you have a replacement (Plugins → Deactivate → Delete). Deleting removes its files; deactivating alone leaves them on the server.
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, once you have a replacement: wp plugin deactivate image-sizes-on-demand && wp plugin delete image-sizes-on-demand

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. 1 record(s) do not state which versions are affected.

medium 6.1 CVE-2026-8622 · published 2026-06-24

Reflected cross-site scripting (XSS) in Image Sizes on Demand (1.3 and older)

Affected: 1.3 and older
Fixed in: unknown
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 Wordfence

Details from the advisory

The Image Sizes on Demand plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via PHP_SELF Server Variable in all versions up to, and including, 1.3 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 injected payload only executes in the context of an administrator, as the settings page requires the manage_options capability to render.

NVD CVE-2026-8622 Wordfence advisory Plugin source

Recent activity

2026-06-18 — closed on wordpress.org (Security Issue).
2026-06-24 — Reflected cross-site scripting (XSS) disclosed (CVE-2026-8622), fix version not stated.

Free. We check the CVE feeds every day and email you only when a new issue for Image Sizes on Demand (image-sizes-on-demand) is published or a fix ships. Unsubscribe in one click.

Browse vulnerabilities

Types found in this plugin: Cross-site scripting (XSS) (1)

Where this data comes from

Version, last update, installs, closure: wordpress.org/plugins/image-sizes-on-demand (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/image-sizes-on-demand"><img src="https://laskyr.com/plugins/image-sizes-on-demand/badge.svg" alt="Image Sizes on Demand vulnerability status"></a>

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