TI-2026-81391 Aliases CVE-2026-116863 GHSA-r394-jh8x-rp4v

Cross-site request forgery in WordPress Newsletters plugin

MEDIUM 42CWE-352Published 2026-10-27 · Updated 2026-10-29

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Tampering
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-352.

Summary

Tribulant Software's Newsletters WordPress plugin (newsletters-lite) through 4.18.2 is affected. The plugin does not adequately protect requests against cross-site request forgery (CWE-352). A remote attacker can trick a user into submitting a forged request, with high impact on confidentiality, integrity and availability.

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

Description from the CNA

Cross-Site Request Forgery (CSRF) vulnerability in Tribulant Software Newsletters newsletters-lite allows Cross Site Request Forgery.This issue affects Newsletters: from n/a through 4.18.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00177 7th 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: 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

Vendor	Product	Affected versions	Fixed in	Status	Source
Tribulant Software	Newsletters	up to 4.18.2	—	No fix listed	CNA

Newsletters VendorTribulant Software Affected up to 4.18.2 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 · 2026-10-29

Timeline

2026-10-27 Threatist record created from CVE-2026-116863
2026-10-27 Alias added: GHSA-r394-jh8x-rp4v
2026-10-29 CISA SSVC decision points changed

References

Other 1

https://patchstack.com/database/wordpress/plugin/newsletters-lite/vulnerability/wordpress-newsletters-plugin-4-18-2-cross-site-request-forgery-csrf-vulnerability?_s_id=cve

TI-2026-80046 PHP object injection in WordPress Newsletters plugin CVSS 3.1CRITICAL 9.8
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-2026-39643 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