CVE-2026-88793Network attack vector

Unauthenticated stored XSS via exposed AJAX nonce

Published Sep 13, 2026 · Updated Sep 13, 2026

Stored cross-site scripting in Hanucodes YouTube Embed 10.0 through 10.3 allows remote attackers to execute scripts in visitors' sessions. The youram_server AJAX action accepts state-changing requests with only a nonce disclosed on every front-end page, then stores data that is rendered without escaping. No authenticated account is required; viewing affected content executes the stored script in the visitor's browser, including an administrator's session.

CVSS severityUnavailable
Unscored
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Hanucodes YouTube Embed 10.0 through 10.3 allows remote attackers to execute scripts in visitors' sessions. The youram_server AJAX action accepts state-changing requests with only a nonce disclosed on every front-end page, then stores data that is rendered without escaping. No authenticated account is required; viewing affected content executes the stored script in the visitor's browser, including an administrator's session.

The record

CVE
CVE-2026-88793
Published
Sep 13, 2026
Updated
Sep 13, 2026
Vendor
Hanucodes
Product
YouTube Embed – YouTube Gallery, Vimeo Gallery – WordPress Plugin
Classifications
T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0 <=10.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hanucodes · YouTube Embed – YouTube Gallery, Vimeo Gallery – WordPress Pluginversion=10.0 <=10.3

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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