Vulnerability details
CVE-2026-111832
WP Mailster WP Mailster
WordPress WP Mailster plugin <= 1.9.1.0 - Arbitrary File Upload vulnerability
CVSS 3.1
10.0Critical
Official description
Unrestricted Upload of File with Dangerous Type vulnerability in WP Mailster WP Mailster wp-mailster allows Upload a Web Shell to a Web Server.This issue affects WP Mailster: from n/a through 1.9.1.0.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 10.0Critical | 3.1 | CVEProject cvelistV5 (CNA) (Patchstack) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| WP Mailster | WP Mailster | v ≤ 1.9.1.0 | CVEProject cvelistV5 (CNA) |
References and advisories
1
Kolun on Telegram @kolunsec
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Details
- Published
- 2026-10-21
- Last updated
- 2026-10-21
- State
- Published
- Assigner (CNA)
- Patchstack
- Kolun priority
- 24 · Low
Exploit prediction (EPSS)
0.4%
Probability of exploitation in 30 days
35%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-434Unrestricted Upload of File with Dangerous Type