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  4. CVE 2026 88793 youtube embed 100 103 unauthenticated stored xss
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Back to active CVEs
High · CVSS 8.8CVE-2026-88793

YouTube Embed 10.0 - 10.3 - Unauthenticated Stored XSS via youram_serverCVE-2026-88793

Answer in brief

CVE-2026-88793 records a High severity (CVSS 8.8) vulnerability in YouTube Embed 10.0 - 10.3 - Unauthenticated Stored XSS via youram_server. The current sources do not mark it as known exploited. The current feed maps Unknown/YouTube Embed (generic), Unknown/YouTube Embed (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 Sep 13, 2026Updated Sep 14, 2026Source checked Oct 29, 2026First seen by HOL Sep 13, 2026Material review Sep 14, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 8.8. 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/YouTube Embed (generic), Unknown/YouTube Embed (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Unknown/YouTube Embedgeneric10.0Not reported
Unknown/YouTube Embedgeneric>=10.0 <=10.3Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Unknown/YouTube Embed, Unknown/YouTube Embed.
  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

    Sep 13, 2026

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

  2. Source modified

    Sep 14, 2026

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

  3. First seen by HOL

    Sep 13, 2026

Sources and claim methodology

  • Source referencewpscan.com
Upstream source description

The YouTube Embed WordPress plugin from 10.0 to 10.3 does not perform any authorisation check on one of its AJAX actions, relying only on a nonce it prints on every front-end page, and does not escape the stored data before rendering it, allowing unauthenticated attackers to store arbitrary web scripts which will execute in the session of any user viewing the affected content, including an administrator.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • configuroweb inventariobasico Add Product addlist.php cross site scriptingAlso CWE-79
  • AVideo-Encoder: reflected cross-site scripting in the login interfaceAlso CWE-79
  • AVideo-Encoder vulnerable to stored DOM cross-site scripting through queue titlesAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 29, 2026
References
1 linked source
Open source record