TI-2021-07108 Aliases CVE-2021-24826 GHSA-h77p-7f34-7fqv

Custom Content Shortcode < 4.0.2 - Authenticated Stored Cross-Site Scripting

LOW 25CWE-79Published 2022-03-07 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

The Custom Content Shortcode WordPress plugin before 4.0.2 does not escape custom fields before outputting them, which could allow Contributor+ (v < 4.0.1) or Admin+ (v < 4.0.2) users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed. Please note that such attack is still possible by admin+ in single site blogs by default (but won't be when the unfiltered_html is disallowed)

Why it matters now

EPSS 0.00604 49th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed Custom Content Shortcode (Unknown): 4.0.2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Unknown	Custom Content Shortcode	4.0.2 to before 4.0.2	4.0.2	Patch available	CNA

Custom Content Shortcode VendorUnknown Affected 4.0.2 to before 4.0.2 Fixed in 4.0.2 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:custom_content_shortcode_project:custom_content_shortcode::::::wordpress::*	before 4.0.2	Vulnerable	Custom Content Shortcode Project

cpe:2.3:a:custom_content_shortcode_project:custom_content_shortcode:*:*:*:*:*:wordpress:*:* Versions before 4.0.2 Vulnerable ·Custom Content Shortcode Project

Remediation

Fix · CNA Custom Content Shortcode (Unknown) Fixed in 4.0.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2022-03-07
Custom Content Shortcode 4.0.2
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2021-07107 Custom Content Shortcode < 4.0.2 - Authenticated Arbitrary File Access / LFIPriority LOW 20
Show all 2 records →

Timeline

2026-10-02 Threatist record created from CVE-2021-24826
2026-10-03 Alias added: GHSA-h77p-7f34-7fqv

References

Exploit 1

https://wpscan.com/vulnerability/e247d78a-7243-486c-a017-7471a8dcb800

TI-2023-00324 Custom Content Shortcode <= 4.0.2 - Contributor+ LFI CVSS 3.1HIGH 8.8
TI-2023-00258 Custom Content Shortcode <= 4.0.2 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
TI-2021-07106 Custom Content Shortcode < 4.0.1 - Unauthorised Arbitrary Post Metadata Access CVSS 3.1MEDIUM 4.3
TI-2021-07107 Custom Content Shortcode < 4.0.2 - Authenticated Arbitrary File Access / LFI CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences