TI-2026-80046 Aliases CVE-2026-94075 GHSA-rfh9-4r53-w9wc

PHP object injection in WordPress Newsletters plugin

MEDIUM 49CWE-502Published 2026-10-24 · Updated 2026-10-24

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

The Newsletters plugin for WordPress by Tribulant Software (newsletters-lite) is affected through 4.18.1. It deserializes untrusted data, which allows PHP object injection (CWE-502). An unauthenticated remote attacker can exploit this to fully compromise confidentiality, integrity and availability.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Deserialization of Untrusted Data vulnerability in Tribulant Software Newsletters newsletters-lite allows Object Injection.This issue affects Newsletters: from n/a through 4.18.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00449 39th 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
Tribulant Software	Newsletters	up to 4.18.1	—	No fix listed	CNA

Newsletters VendorTribulant Software Affected up to 4.18.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Newsletters.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

2026-10-24 Threatist record created from CVE-2026-94075
2026-10-24 Alias added: GHSA-rfh9-4r53-w9wc
2026-10-24 CISA SSVC decision points changed

References

Other 1

https://patchstack.com/database/wordpress/plugin/newsletters-lite/vulnerability/wordpress-newsletters-plugin-4-18-1-php-object-injection-vulnerability?_s_id=cve

TI-2025-41520 WordPress Newsletters plugin <= 4.11 - PHP Object Injection vulnerability CVSS 3.1CRITICAL 9.8
TI-2026-80049 SQL injection in WordPress Newsletters plugin CVSS 3.1CRITICAL 9.3
TI-2026-81391 Cross-site request forgery in WordPress Newsletters plugin CVSS 3.1CRITICAL 9.6
TI-2026-39643 WordPress Newsletters plugin <= 4.13 - Broken Access Control vulnerability CVSS 3.1HIGH 7.3
TI-2025-33879 WordPress Newsletters plugin <= 4.10 - Local File Inclusion vulnerability CVSS 3.1HIGH 7.5
TI-2026-41470 WordPress Newsletters plugin <= 4.13 - Broken Access Control vulnerability CVSS 3.1HIGH 8.1

See all 16 →

Sources

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