ByteOS Network

CVE Vulnerability Details :

CVE-2026-25529

PUBLISHED

More Info Official Page

Assigner-GitHub_M

Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa

Published At-12 Mar, 2026 | 16:35

Updated At-12 Mar, 2026 | 17:57

▼CVE Numbering Authority (CNA)

Postal has HTML injection / XSS in message view

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 Products

Vendor

postalserver

Product

postal

Versions

Affected

< 3.3.5

Problem Types

Type	CWE ID	Description
CWE	CWE-79	CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Type: CWE

CWE ID: CWE-79

Description: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Metrics

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

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

References

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

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

Resource:

x_refsource_CONFIRM

▼Authorized Data Publishers (ADP)

CISA ADP Vulnrichment

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Replaced By

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References

Affected Products

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References