What’s Vulnerable › Vulnerabilities
CVE-2026-88903: Topcontent <= 1.2.1 - Unauthenticated Stored XSS via Content Webhook
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-11 · updated 2026-10-13
- Weakness: CWE-79
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
- Topcontent: through 1.2.1
References
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