CVE-2025-11819Network attack vector

Contributor-level stored XSS via unescaped shortcode attributes

Published Oct 22, 2025 · Updated Oct 22, 2025

Stored XSS in the roboshot shortcode in RoboCasters WP-Thumbnail 1.1 and earlier allows remote authenticated users to inject scripts. The shortcode handler accepts user-supplied attributes without sufficient sanitization and emits them into page output without context-appropriate escaping. Contributor-level access is sufficient; the stored script executes in the browser whenever a visitor opens the affected page, allowing page-context data access or modification.

CVSS severity6.4
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in the roboshot shortcode in RoboCasters WP-Thumbnail 1.1 and earlier allows remote authenticated users to inject scripts. The shortcode handler accepts user-supplied attributes without sufficient sanitization and emits them into page output without context-appropriate escaping. Contributor-level access is sufficient; the stored script executes in the browser whenever a visitor opens the affected page, allowing page-context data access or modification.

The record

CVE
CVE-2025-11819
Published
Oct 22, 2025
Updated
Oct 22, 2025
Vendor
RoboCasters
Product
WP-Thumbnail
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 2025Record 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=* <=1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

RoboCasters · WP-Thumbnailversion=* <=1.1

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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