CVE-2026-3286 itwanger paicoding Image Save Endpoint ImageRestController.java save server-side request forgery

Medium 5.3 Published 27 Feb 2026 Updated 27 Feb 2026

Remote attackers can exploit a server-side request forgery vulnerability in the image save endpoint to access internal resources or bypass security controls.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-3286?

CVE-2026-3286 is a medium-severity server-side request forgery vulnerability in itwanger paicoding, published on 27 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was identified in itwanger paicoding 1.0.0/1.0.1/1.0.2/1.0.3. The impacted element is the function Save of the file paicoding-web/src/main/java/com/github/paicoding/forum/web/common/image/rest/ImageRestController.java of the component Image Save Endpoint. Such manipulation of the argument img leads to server-side request forgery. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-918

Which versions are affected by CVE-2026-3286?

It affects 1 product.

Products include Itwanger Paicoding.

How do I fix CVE-2026-3286?

No fix has been published for CVE-2026-3286 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2026-3286 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3286 exists.

Sources

Also known as GHSA-7cj7-hvph-vvv7.