CVE-2026-88903

Topcontent <= 1.2.1 - Unauthenticated Stored XSS via Content Webhook

Published Oct 11, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-284
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-284
CWE-79
Type Values Removed Values Added
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.
Title Topcontent <= 1.2.1 - Unauthenticated Stored XSS via Content Webhook
References

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Oct 11, 2026, 11:32 AM
Reserved
Sep 10, 2026, 12:14 PM
Status
Deferred
Published
Oct 11, 2026, 7:17 AM
Modified
Oct 13, 2026, 8:36 PM