Tribulant Software Newsletters CVE-2025-67911
CRITICAL
Deserialization of Untrusted Data (CWE-502)
2026-01-08
audit@patchstack.com
9.8
CVSS 3.1 · NVD
Share
Severity by source
NVD
PRIMARY
9.8
CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Lifecycle Timeline
2
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Jan 08, 2026 - 10:15 nvd
CRITICAL 9.8
DescriptionCVE.org
Deserialization of Untrusted Data vulnerability in Tribulant Software Newsletters newsletters-lite allows Object Injection.This issue affects Newsletters: from n/a through <= 4.11.
AnalysisAI
Newsletters WordPress plugin by Tribulant (through 4.11) is vulnerable to PHP object injection through deserialization of untrusted data, potentially leading to RCE via POP chains.
Technical ContextAI
The plugin deserializes untrusted input (CWE-502), allowing arbitrary PHP object injection. With suitable POP chains in WordPress or other plugins, this achieves remote code execution.
Affected ProductsAI
Newsletters by Tribulant through 4.11
RemediationAI
Update the plugin. Monitor for deserialization exploitation indicators.
Share
External POC / Exploit Code
Leaving vuln.today
Destination URL
POC code from unknown sources may be malicious, contain backdoors, or be fake.
Always review and test exploit code in a safe, isolated environment (VM/sandbox).
Verify the source reputation and cross-reference with known databases (Exploit-DB, GitHub Security).