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  4. CVE 2026 88903 topcontent 121 unauthenticated stored xss via
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-88903

Topcontent <= 1.2.1 - Unauthenticated Stored XSS via Content WebhookCVE-2026-88903

Answer in brief

CVE-2026-88903 records a Unknown severity vulnerability in Topcontent <= 1.2.1 - Unauthenticated Stored XSS via Content Webhook. The current sources do not mark it as known exploited. The current feed maps Unknown/Topcontent (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 11, 2026Updated Oct 11, 2026Source checked Oct 11, 2026First seen by HOL Oct 11, 2026Material review Oct 11, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/Topcontent (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Unknown/Topcontentgeneric>=0 <=1.2.1Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Unknown/Topcontent.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Oct 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 11, 2026

Sources and claim methodology

  • Source referencewpscan.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Robo Gallery < 5.2.6 - Author+ Stored XSS via Image Alt TextAlso CWE-79
  • Robo Gallery < 5.2.6 - Author+ Stored XSS via Gallery Search LabelAlso CWE-79
  • Robo Gallery < 5.2.6 - Contributor+ Stored XSS via Gallery SettingsAlso CWE-79
  • click5 CRM add-on to Ninja Forms <= 1.0.1 - Unauthenticated Stored XSS via post_notificationsAlso CWE-79
  • click5 CRM add-on to WPForms <= 1.0.3 - Unauthenticated Stored XSS via post_notificationsAlso CWE-79
  • click5 CRM add-on to Gravity Forms <= 1.0.3 - Unauthenticated Stored XSS via post_notificationsAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 11, 2026
References
1 linked source
Open source record