CVE-2026-26483

MEDIUM

SendPortal <= 3.0.1 - Stored Cross-Site Scripting via Template Content Parameter

Title source: llm

Description

Mettle SendPortal 3.0.1 and earlier contains a stored cross-site scripting (XSS) vulnerability in the template management functionality. The application fails to properly sanitize user-supplied input in the content parameter of the /templates endpoint, allowing an attacker to persistently inject malicious JavaScript code that is executed in the browsers of users who access the affected template.

References (2)

Core 2

Core References

https://github.com/mettle/sendportal

View Writeup ZIP pw:eip

https://gist.github.com/WinBlah12/8dbc1eae788945c6ea6ab1a2cdfd7cb1

Scores

CVSS v3 6.1

EPSS 0.0016

EPSS Percentile 6.0%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Published Jul 20, 2026

Tracked Since Jul 20, 2026