CVE-2026-3862: broadcom siteminder Cross-site Scripting
CVSS: 4.8v3.1MediumAnalyzed
Published 10-03-2026Last modified 10-03-2026
Vulnerability summary
CVE-2026-3862 is a medium (CVSS 4.8) Cross-site Scripting vulnerability in broadcom siteminder. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.5% of scored vulnerabilities.
CVSS score
4.8/10
010
Medium · v3.1 (NVD)EPSS score
0.25%
0%100%
Low · +0.06 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 10-03-2026PublishedVulnerability first disclosed.
- 10-03-2026Last modifiedVulnerability information updated.
Description
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 metrics
3 scores · 2 sources · 2 versionsMedium 4.6Preferred score · CVE.org (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:GreenSourcesAll 2 agree
- NVDNIST4.6MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:A/V:X/RE:M/U:Green
Medium 4.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:NSourcesSingle source
EPSS trend
Probability
0.25%
Chance of exploitation in the next 30 days
Percentile
16%
Versus all other CVEs
30-day change
+0.06 pp
From 0.19% on 19-09-2026
19-09-202619-10-2026
EPSS score0.25%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Broadcom2 products
- siteminder12.9 | ≥ 12.8.0, < 12.9.0
- symantec_siteminder≥ 12.8, ≤ 12.8.08 | 12.9
1 vendor · 2 products