CVE-2025-10135Network attack vector

Stored XSS via unescaped shortcode attributes

Published Oct 15, 2025 · Updated Oct 15, 2025

Stored XSS in WP ViewSTL 1.0 and earlier allows remote authenticated users to inject scripts through the viewstl shortcode. The shortcode handler accepts user-supplied attributes without sufficient sanitization and emits them without adequate output escaping. Contributor-level access is required to store the payload in a page, where the script executes in a visitor's browser when that page is viewed.

CVSS severity6.4
Medium
EPSS probability0.24%
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 WP ViewSTL 1.0 and earlier allows remote authenticated users to inject scripts through the viewstl shortcode. The shortcode handler accepts user-supplied attributes without sufficient sanitization and emits them without adequate output escaping. Contributor-level access is required to store the payload in a page, where the script executes in a visitor's browser when that page is viewed.

The record

CVE
CVE-2025-10135
Published
Oct 15, 2025
Updated
Oct 15, 2025
Vendor
falldeaf
Product
WP ViewSTL
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 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=* <=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

falldeaf · WP ViewSTLversion=* <=1.0

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1203Exploitation for Client Execution

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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