What is CVE-2026-29964?

CVE-2026-29964 is a medium-severity vulnerability in Hsclabs Mailinspector, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-05-18.

How severe is CVE-2026-29964?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Hsclabs Mailinspector

CVE-2026-29964

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 unsa…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (13.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Hsclabs Mailinspector — versions 5.3.3-7
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Product)
cve@mitre.org (Third Party Advisory)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2026-29964?: CVE-2026-29964 is a medium-severity vulnerability in Hsclabs Mailinspector, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-05-18.
How severe is CVE-2026-29964?: Medium severity. CVSS v3 base score is 6.1 out of 10.