CVE-2025-13848Network attack vector

Stored XSS via unescaped composicion shortcode attribute

Published Jan 7, 2026 · Updated Jan 7, 2026

Stored XSS in Sergio TOCA MORENO STM Gallery 0.9 and earlier allows remote authenticated users to inject scripts via composicion. The gallery shortcode handler accepts the composicion attribute and renders it into page output without sufficient sanitization or escaping. Contributor-level access is sufficient; the stored script runs in a visitor's browser whenever the affected page is opened, enabling page-context data access or modification.

CVSS severity6.4
Medium
EPSS probability0.32%
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 Sergio TOCA MORENO STM Gallery 0.9 and earlier allows remote authenticated users to inject scripts via composicion. The gallery shortcode handler accepts the composicion attribute and renders it into page output without sufficient sanitization or escaping. Contributor-level access is sufficient; the stored script runs in a visitor's browser whenever the affected page is opened, enabling page-context data access or modification.

The record

CVE
CVE-2025-13848
Published
Jan 7, 2026
Updated
Jan 7, 2026
Vendor
Sergio TOCA MORENO
Product
STM Gallery
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 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=* <=0.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Sergio TOCA MORENO · STM Galleryversion=* <=0.9

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')
T1059.007JavaScript/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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