CVE-2026-29964

MEDIUM EPSS 15.4%
Published May 18, 20261mo ago · Modified Jun 17, 20262w ago
6.1 CVSS 3.1
Medium
Find Similar
Published May 18, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

HSC MailInspector v5.3.3-7 contains a Cross-Site Scripting (XSS) vulnerability in the /tap/tap.php endpoint due to improper neutralization of user-controlled input using alternate or obfuscated JavaScript syntax. The endpoint reflects unsanitized user input in HTTP responses without adequate output encoding, allowing a remote attacker to execute arbitrary JavaScript code in the context of a victim's browser.

CVSS Details

Base Score
6.1
Exploitability
2.8
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
15.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
hsclabsmailinspector5.3.3-7any

References 3

  • github.com https://github.com/sql3t0/cve-disclosures
    Third Party Advisory
  • github.com https://github.com/sql3t0/cve-disclosures/blob/main/03_-_CVE-2026-29964_XSS.md
    Third Party Advisory
  • hsclabs.com https://hsclabs.com/pt-br/mailinspector/
    Product

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.