CVE-2026-28558 wpForo Forum 2.4.14 Stored XSS via SVG Avatar File Upload
Authenticated users can upload malicious SVG avatars to execute scripts in other users' browsers via stored XSS.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-28558?
CVE-2026-28558 is a medium-severity cross-site scripting vulnerability in gVectors Team wpForo Forum, published on 28 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
wpForo Forum 2.4.14 contains a stored cross-site scripting vulnerability that allows authenticated subscribers to upload SVG files as profile avatars through the avatar upload functionality. Attackers upload a crafted SVG containing CSS injection or JavaScript event handlers that execute in the browsers of any user who views the attacker's profile page.
Weakness: CWE-79
Which versions are affected by CVE-2026-28558?
It affects 1 product.
Products include Gvectors Wpforo Forum.
How do I fix CVE-2026-28558?
No fix has been published for CVE-2026-28558 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-2026-28558 being exploited?
There is no known exploitation of CVE-2026-28558 in the wild and no public exploit code.
Other vulnerabilities in gVectors Team wpForo Forum
- CVE-2024-3200 wpForo Forum <= 2.3.3 - Authenticated (Contributor+) SQL Injection
- CVE-2022-40200 WordPress wpForo Forum plugin <= 2.0.9 - Auth. Arbitrary File Upload vulnerability
- CVE-2018-16613 Privilege escalation in n/a
- CVE-2026-28562 wpForo Forum 2.4.14 SQL Injection via Topics ORDER BY Parameter
- CVE-2023-2249 Server-side request forgery in wpForo Forum
Sources
Also known as GHSA-p235-gwp9-pfq6.