ByteOS Network

NVD Vulnerability Details :

CVE-2026-25529

Analyzed

Source-security-advisories@github.com

Published At-12 Mar, 2026 | 17:16

Updated At-19 Mar, 2026 | 17:53

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.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	8.1	HIGH	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Type: Secondary

Version: 3.1

Base score: 8.1

Base severity: HIGH

Vector:

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CPE Matches

postalserver>>postal>>Versions before 3.3.5(exclusive)

cpe:2.3:a:postalserver:postal:*:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
CWE-79	Primary	security-advisories@github.com

CWE ID: CWE-79

Type: Primary

Source: security-advisories@github.com

References

Hyperlink	Source	Resource
https://github.com/postalserver/postal/security/advisories/GHSA-5f4r-5jpr-rfhc	security-advisories@github.com	Mitigation Vendor Advisory

Hyperlink: https://github.com/postalserver/postal/security/advisories/GHSA-5f4r-5jpr-rfhc

Source: security-advisories@github.com

Resource:

Mitigation

Vendor Advisory

CISA Catalog

Metrics

CPE Matches

Weaknesses

Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References

Change History