CVE-2026-15649Network attack vector

Stored XSS via unescaped Progress Bar attributes

Published Aug 1, 2026 · Updated Aug 1, 2026

Stored XSS in Powerkit 3.1.0 and earlier allows remote authenticated users to inject scripts through Progress Bar shortcode attributes. The Progress Bar template writes the display value into page markup as HTML and emits height, value, and color attributes without adequate validation or output escaping. Contributor-level access is required to store the shortcode; the injected script runs when a user opens the affected page.

CVSS severity6.4
Medium
EPSS probability0.19%
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 Powerkit 3.1.0 and earlier allows remote authenticated users to inject scripts through Progress Bar shortcode attributes. The Progress Bar template writes the display value into page markup as HTML and emits height, value, and color attributes without adequate validation or output escaping. Contributor-level access is required to store the shortcode; the injected script runs when a user opens the affected page.

The record

CVE
CVE-2026-15649
Published
Aug 1, 2026
Updated
Aug 1, 2026
Vendor
Code Supply Co.
Product
Powerkit
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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 <=3.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Code Supply Co. · Powerkitversion=0 <=3.1.0

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 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

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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