CVE-2026-88903: high-severity vulnerability in Topcontent
Topcontent <= 1.2.1 - Unauthenticated Stored XSS via Content Webhook
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.8epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Unknown · Topcontentpublic PoCs found — 1
cve_referencewpscan.com/vulnerability/173b07dd-6404-49c0-9e01-90b5b68d1dec/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.