Postalserver maintains a narrowly scoped mail-server product that occupies a focused niche in email infrastructure. Its vulnerability exposure centers on output-encoding and cross-site scripting issues characteristic of web-facing administrative or user-facing interfaces, and current severity, exploitation, and exposure counts are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Postalserver over time
Signals from CVEs in this vendor scope (2 CVEs).
2 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2026-25529HIGH Postal is an open source SMTP server. Postal versions less than 3.3.5 had a HTML injection vulnerability that allowed unescaped data to be included in the admin interface. The prim | Mar 12, 2026 | 8.1 | 26 | NO | NO |
CVE-2024-27938MEDIUM Postal is an open source SMTP server. Postal versions less than 3.0.0 are vulnerable to SMTP Smuggling attacks which may allow incoming e-mails to be spoofed. This, in conjunction | Mar 11, 2024 | 5.3 | 17 | NO | NO |
Signals from CVEs in this vendor scope (2 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Postalserver.
Media articles that mention a CVE ID that affects a product developed by Postalserver — matched by CVE ID, not by vendor name.