TI-2026-70430 Aliases CVE-2026-66564 GHSA-fwhr-3chv-3fvp

Unauthenticated PHP object injection in WordPress ShiftCV theme

MEDIUM 49CWE-502Published 2026-10-10 · Updated 2026-10-11

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

ThemeREX ShiftCV WordPress theme through 3.0.14 is affected. The theme deserializes untrusted data (CWE-502), so an unauthenticated remote attacker can inject PHP objects. Successful exploitation can affect confidentiality, integrity and availability.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Unauthenticated PHP Object Injection in ShiftCV <= 3.0.14 versions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00304 23rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
ThemeREX	ShiftCV	up to 3.0.14	—	No fix listed	CNA

ShiftCV VendorThemeREX Affected up to 3.0.14 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for ShiftCV.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-11 Threatist record created from CVE-2026-66564
2026-10-11 Alias added: GHSA-fwhr-3chv-3fvp

References

Other 1

https://patchstack.com/database/wordpress/theme/shift-cv/vulnerability/wordpress-shiftcv-theme-3-0-14-php-object-injection-vulnerability?_s_id=cve

TI-2020-08268 The ThemeREX Addons plugin before 2020-03-09 for WordPress lacks access control on the… CVSS 3.1CRITICAL 9.8
TI-2024-12489 ThemeREX Addons <= 2.32.3 - Unauthenticated Arbitrary File Upload in trx_addons_uploads_save_data CVSS 3.1CRITICAL 9.8
TI-2024-05844 Several WordPress.org Plugins <= Various Versions - Injected Backdoor CVSS 3.1CRITICAL 10.0
TI-2026-47321 WordPress FreightCo theme <= 1.1.15 - PHP Object Injection vulnerability CVSS 3.1CRITICAL 9.8
TI-2026-46741 WordPress Abelle theme <= 1.22 - PHP Object Injection vulnerability CVSS 3.1CRITICAL 9.8
TI-2026-44381 WordPress ThemeREX Addons plugin < 2.45.0 - PHP Object Injection vulnerability CVSS 3.1CRITICAL 9.8

See all 237 →

Sources

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