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WordPress Newsletters plugin <= 4.18.1 - PHP Object Injection vulnerability

9.8CriticalCNA
Exploited
No known exploitation
Fix
No fix listed
Who is exposed
Not reported
Published
Last modified
0.45% · 39th percentile
35/100
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: total

Summary

The Newsletters WordPress plugin by Tribulant Software is affected by this vulnerability. An attacker could exploit the flaw to inject malicious PHP objects, potentially allowing them to run code, access or change data, or take control of the affected website.

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

Read the original description

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.

cve.now Index

35cve.now Index 35 of 100 · methodology v3
  • Exploitation0/40No signal
  • Exposure20/25No login or user action needed per the CVSS vector, CISA rates it automatable · Unknown: No advisory context yet
  • Reach?/20Unknown. No tracked technology or package matched
  • Severity10/10CVSS 9.8, total technical impact per CISA
  • No patch5/5No patch listed yet

What would change the score

  • Would score about 80 if added to CISA KEV
  • Would score about 75 if CISA's SSVC rates exploitation active
  • Would score about 40 if advisories confirm default setups are exposed

Timeline

  1. CVE published
  2. First seen by cve.now
  3. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: total

  4. Record last updated

Affected versions

  • newsletters-lite

    through 4.18.1

Evidence 1

  1. Link

Corrections

None so far.

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Questions about CVE-2026-94075

Is CVE-2026-94075 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data

Which versions are affected by CVE-2026-94075?

newsletters-lite: through 4.18.1.Source: cve.now feed data