CVE-2023-3155 NextGEN Gallery < 3.39 - Admin+ Arbitrary File Read and Delete

Q: What is CVE-2023-3155?

CVE-2023-3155 is a high-severity path traversal vulnerability in Unknown WordPress Gallery Plugin, published on 16 Oct 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Q: Is CVE-2023-3155 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-3155 exists.

Q: How do I fix CVE-2023-3155?

No fix has been published for CVE-2023-3155 yet. Limit exposure of the affected software until one is available.

High 7.2 Published 16 Oct 2023 Updated 23 Apr 2025

An authenticated admin can read and delete arbitrary files on the server due to insufficient input validation in the NextGEN Gallery plugin.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-3155?

CVE-2023-3155 is a high-severity path traversal vulnerability in Unknown WordPress Gallery Plugin, published on 16 Oct 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

The WordPress Gallery Plugin WordPress plugin before 3.39 is vulnerable to Arbitrary File Read and Delete due to a lack of input parameter validation in the `gallery_edit` function, allowing an attacker to access arbitrary resources on the server.

Weakness: CWE-552

Which versions are affected by CVE-2023-3155?

It affects 1 product.

Products include Imagely Nextgen Gallery.

How do I fix CVE-2023-3155?

No fix has been published for CVE-2023-3155 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2023-3155 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-3155 exists.

Sources

Also known as GHSA-4mq9-mp5g-r83q.