CVE-2026-88993 All Bootstrap Blocks <= 1.3.31 - Contributor+ Stored XSS via areoi/button type Attribute
Contributors can inject arbitrary scripts via block attributes, leading to stored XSS when content is viewed.
- 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-2026-88993?
CVE-2026-88993 is a medium-severity cross-site scripting vulnerability in Unknown All Bootstrap Blocks, published on 18 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The All Bootstrap Blocks WordPress plugin through 1.3.31 does not properly escape a block attribute before outputting it in HTML tag-name position, allowing users with Contributor-level access and above to inject arbitrary web scripts that execute when the affected content is viewed.
Weakness: CWE-79
Which versions are affected by CVE-2026-88993?
How do I fix CVE-2026-88993?
No fix has been published for CVE-2026-88993 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-2026-88993 being exploited?
There is no known exploitation of CVE-2026-88993 in the wild and no public exploit code.
Sources
Also known as GHSA-c62f-23hx-w7cg.