PT-2026-22720 · Unknown · Mail-Parser

Ravishanker Kusuma · Published 2026-03-03 · Updated 2026-03-13 · CVE-2026-3455

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions mailparser versions prior to 3.9.3

Description The package mailparser is susceptible to Cross-site Scripting (XSS) due to insufficient sanitization of URLs within email content. Specifically, the textToHtml() function does not properly handle URLs, allowing an attacker to inject malicious JavaScript code by adding extra quotes to the URL. This can lead to the execution of arbitrary scripts in a victim's browser.

Recommendations Update mailparser to version 3.9.3 or later.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-3455

GHSA-7GMJ-H9XC-MCXC

Affected Products

Mail-Parser

References · 15

• 🔥 https://gist.github.com/hayageek/7fcb225e3b1ea9a341d560403fbb585a · Exploit
• https://github.com/nodemailer/mailparser/commit/921a67df4cfb38f0b411037d7b26fbd4d5411b08 · Patch
• https://osv.dev/vulnerability/GHSA-7gmj-h9xc-mcxc · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-3455 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-3455 · Security Note
• https://github.com/nodemailer/mailparser · Note
• https://github.com/nodemailer/mailparser/issues/412 · Note
• https://twitter.com/VulmonFeeds/status/2028765462796882111 · Twitter Post
• https://twitter.com/cyberbivash/status/2028719008564781434 · Twitter Post
• https://twitter.com/CVEnew/status/2028713555143352475 · Twitter Post
• https://t.me/CVEtracker/46187 · Telegram Post
• https://t.me/cveNotify/153889 · Telegram Post
• https://t.me/cveNotify/155441 · Telegram Post
• https://security.snyk.io/vuln/SNYK-JS-MAILPARSER-15204032 · Note
• https://twitter.com/infoflowcloud/status/2028714674498261122 · Twitter Post