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TI-2023-00324 Aliases CVE-2023-0340GHSA-q9rp-c9pw-fg3v

Custom Content Shortcode <= 4.0.2 - Contributor+ LFI

Priority HIGH 73Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

The Custom Content Shortcode WordPress plugin through 4.0.2 does not validate one of its shortcode attribute, which could allow users with a contributor role and above to include arbitrary files via a traversal attack. This could also allow them to read non PHP files and retrieve their content. RCE could also be achieved if the attacker manage to upload a malicious image containing PHP code, and then include it via the affected attribute, on a default WP install, authors could easily achieve that given that they have the upload_file capability.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01047 64th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownCustom Content Shortcodeup to 4.0.2—No fix listedCNA
  • Custom Content Shortcode VendorUnknown Affected up to 4.0.2 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:custom_content_shortcode_project:custom_content_shortcode:*:*:*:*:*:wordpress:*:*up to 4.0.2VulnerableCustom Content Shortcode Project

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-0340
  2. 2026-10-03 Alias added: GHSA-q9rp-c9pw-fg3v

References

Exploit 1

  • TI-2023-00258 Custom Content Shortcode <= 4.0.2 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
  • TI-2021-07108 Custom Content Shortcode < 4.0.2 - Authenticated Stored Cross-Site Scripting 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