Vulnerability · Published Oct 11, 2026 · Assigned by WPScan
CVE-2026-88903Topcontent <= 1.2.1 - Unauthenticated Stored XSS via Content Webhook
High 8.8
In plain English
A high-severity cross-site scripting in Topcontent from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.3%top 79.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The Topcontent WordPress plugin through 1.2.1 does not properly authorise one of its request handlers and disables HTML sanitisation before storing the submitted content, allowing unauthenticated attackers to publish arbitrary posts containing malicious JavaScript on any site where its API key has never been configured.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Topcontent | 0 – through 1.2.1 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- https://wpscan.com/vulnerability/173b07dd-6404-49c0-9e01-90b5b68d1dec/ exploit, vdb-entry, technical-description