CVE-2024-6848Public exploitNetwork attack vector

Stored XSS via unchecked decoded image MIME

Published Jul 20, 2024 · Updated Apr 8, 2026

Stored XSS in BoldGrid Post and Page Builder 1.26.6 and earlier allows remote authenticated users to execute scripts via uploaded SVG files. The boldgrid_canvas_image AJAX handler writes decoded base64 data using a caller-supplied extension without validating the content's actual MIME type. Contributor-level access and a valid nonce are required; the script runs when a user opens the stored SVG in a browser.

CVSS severity6.4
Medium
EPSS probability0.46%
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 1.26.6 and earlier allows remote authenticated users to execute scripts via uploaded SVG files. The boldgrid_canvas_image AJAX handler writes decoded base64 data using a caller-supplied extension without validating the content's actual MIME type. Contributor-level access and a valid nonce are required; the script runs when a user opens the stored SVG in a browser.

The record

CVE
CVE-2024-6848
Published
Jul 20, 2024
Updated
Apr 8, 2026
Vendor
Web Ventures
Product
Post and Page Builder
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 20, 2024CVE 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.26.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Web Ventures · Post and Page Builderversion=0 <=1.26.6

Published CVSS scores

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

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

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 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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