CVE-2026-76546Network attack vectorHinoki check available

Contributor-level stored XSS via unescaped shortcode output

Published Aug 29, 2026 · Updated Aug 29, 2026

Stored XSS in Cozmoslabs Profile Builder 3.3.4 through 4.0.0 allows remote authenticated users to inject script via the format-date shortcode. The shortcode returns its formatted date output without escaping attacker-controlled markup, which persists and executes when affected content is viewed. Contributor access and explicit shortcode enablement are required; viewing crafted content runs the stored script in the viewer's session, including an administrator session.

CVSS severity6.8
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored XSS in Cozmoslabs Profile Builder 3.3.4 through 4.0.0 allows remote authenticated users to inject script via the format-date shortcode. The shortcode returns its formatted date output without escaping attacker-controlled markup, which persists and executes when affected content is viewed. Contributor access and explicit shortcode enablement are required; viewing crafted content runs the stored script in the viewer's session, including an administrator session.

The record

CVE
CVE-2026-76546
Published
Aug 29, 2026
Updated
Aug 29, 2026
Vendor
Cozmoslabs
Product
Profile Builder
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 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=3.3.4 <4.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Cozmoslabs · Profile Builderversion=3.3.4 <4.0.1

Published CVSS scores

6.8CISA ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

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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