CVE-2025-22759Public exploitNetwork attack vector

Stored XSS via unvalidated custom-header tag name

Published Jan 15, 2025 · Updated Apr 28, 2026

Stored XSS in BoldGrid Post and Page Builder 1.27.5 and earlier allows remote authenticated users to execute scripts via custom headers. The custom-header renderer uses the attacker-controlled bgc_heading_type shortcode attribute as an HTML tag name without restricting it to heading tags. Contributor access plus the Crio theme and Premium extension are required; the script runs when a user previews or visits the affected header.

CVSS severity6.5
Medium
EPSS probability0.31%
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 BoldGrid Post and Page Builder 1.27.5 and earlier allows remote authenticated users to execute scripts via custom headers. The custom-header renderer uses the attacker-controlled bgc_heading_type shortcode attribute as an HTML tag name without restricting it to heading tags. Contributor access plus the Crio theme and Premium extension are required; the script runs when a user previews or visits the affected header.

The record

CVE
CVE-2025-22759
Published
Jan 15, 2025
Updated
Apr 28, 2026
Vendor
Web Ventures
Product
Post and Page Builder
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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 <=1.27.5 changes=[{"at":"1.27.6","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Web Ventures · Post and Page Builderversion=0 <=1.27.5 changes=[{"at":"1.27.6","status":"unaffected"}]

Published CVSS scores

6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/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.

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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

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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