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CVE-2026-25529

nvd nist
Published: Mar 12, 2026Modified: Mar 19, 2026

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8.1
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Exploitability: 2.8 / Impact: 5.2
Source: security-advisories@github.com (Secondary)

Description

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 primary way for unescaped data to be added is via the API's "send/raw" method. This could allow arbitrary HTML to be injected in to the page which may modify the page in a misleading way or allow for unauthorised javascript to be executed. Fixed in 3.3.5 and higher.

Affected (1)

Products: Postalserver: Postal
Postalserver
1 product
Postal
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Postal
Before 3.3.5

Related CWEs

CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (1)

Source: security-advisories@github.com
MitigationVendor Advisory

Timeline

No history available yet.