CVE-2026-23525 1panel App Store vulnerable to Cross-site Scripting
Attackers can inject malicious scripts via App Store content, leading to session theft and unauthorized system access in 1Panel.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-23525?
CVE-2026-23525 is a medium-severity cross-site scripting vulnerability in 1Panel-dev 1Panel, published on 18 Jan 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
1Panel is an open-source, web-based control panel for Linux server management. A stored Cross-Site Scripting (XSS) vulnerability exists in the 1Panel App Store when viewing application details. Malicious scripts can execute in the context of the user’s browser, potentially compromising session data or sensitive system interfaces. All versions of 1Panel up to and including v1.10.33-lts and v2.0.16 are affected. An attacker could publish a malicious application that, when loaded by users (locally or remotely), can execute arbitrary scripts. This may result in theft of user cookies, unauthorized access to system functions, or other actions that compromise the confidentiality, integrity, and availability of the system. The vulnerability is caused by insufficient sanitization of content rendered by the MdEditor component with the `previewOnly` attribute enabled. Specifically, the App Store renders application README content without proper XSS protection, allowing script execution during content rendering; and similar issues exist in system upgrade-related components, which can be fixed by implementing proper XSS sanitization in the MdEditor component. These vulnerabilities can be mitigated by applying proper XSS protection and sanitization when rendering content in the MdEditor component. Safe versions with a patch incorporated are v1.10.34-lts and v2.0.17.
Weakness: CWE-79
Which versions are affected by CVE-2026-23525?
It affects 1 product.
Products include Fit2cloud 1panel.
How do I fix CVE-2026-23525?
No fix has been published for CVE-2026-23525 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-23525 being exploited?
There is no known exploitation of CVE-2026-23525 in the wild and no public exploit code.
Other vulnerabilities in 1Panel-dev 1Panel
Sources
Also known as GHSA-mg24-6h5c-9q42.