Medium 4.6Published Mar 10, 2026

CVE-2026-3862Cross-Site Scripting Vulnerability in SiteMinder Administrative UI

Updated under an hour ago (Oct 27, 2026, 6:00 AM ET)

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It affects Broadcom SiteMinder and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

Cross-site Scripting (XSS) allows an attacker to submit specially crafted data to the application which is returned unaltered in the resulting web page.

CVSS: 4.6 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/AU:N/R:A/RE:M/U:Green
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: symantec
NVD analysis: Analyzed
Record last updated: Mar 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Broadcom SiteMinder broadcom:siteminder (from the name)	12.9; 12.8.x	CNA record
broadcom symantec_siteminder broadcom:symantec_siteminder	from 12.8 through 12.8.08; 12.9	NVD

References

References

https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/37176	vendor-advisory, permissions-required

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.