What is CVE-2026-78415?

CVE-2026-78415 is a medium-severity vulnerability in IBM Sterling Secure Proxy, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-09-14.

How severe is CVE-2026-78415?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in IBM Sterling Secure Proxy

CVE-2026-78415

IBM Sterling Secure Proxy 6.2.0.0 through 6.2.1.2 could allow a remote authenticated attacker to perform UI spoofing and phishing attacks due to improper neutralization of user-supplied HTML markup.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Ibm Sterling Secure Proxy

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-78415?: CVE-2026-78415 is a medium-severity vulnerability in IBM Sterling Secure Proxy, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-09-14.
How severe is CVE-2026-78415?: Medium severity. CVSS v3 base score is 5.4 out of 10.