CVE-2025-5587Network attack vector

Stored script execution via unescaped progressbarLayout attribute

Published Jul 29, 2025 · Updated Apr 8, 2026

Stored XSS in Appzend 1.2.6 and earlier allows remote authenticated users to inject scripts through the progressbarLayout parameter. The progress-bar block renderer places the attacker-controlled layout value into generated page markup without sufficient sanitization or output escaping. Contributor-level access is required to save the crafted page, after which the script executes in the browser of anyone who visits it.

CVSS severity6.4
Medium
EPSS probability0.30%
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 Appzend 1.2.6 and earlier allows remote authenticated users to inject scripts through the progressbarLayout parameter. The progress-bar block renderer places the attacker-controlled layout value into generated page markup without sufficient sanitization or output escaping. Contributor-level access is required to save the crafted page, after which the script executes in the browser of anyone who visits it.

The record

CVE
CVE-2025-5587
Published
Jul 29, 2025
Updated
Apr 8, 2026
Vendor
Sparkle Themes
Product
Appzend
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=1.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Sparkle Themes · Appzendversion=0 <=1.2.6

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')
T1059.007Command and Scripting Interpreter: JavaScript

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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