Vulnerability · Published Sep 28, 2026 · Assigned by CERT-PL
CVE-2026-73641Multiple Reflected XSS in Dayforce ESS Excelity
Medium 5.1
In plain English
A medium-severity cross-site scripting in ESS Excelity from Dayforce. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Severity (CVSS 4.0)5.1Medium
Exploit odds (30 days)0.3%top 74.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Dayforce ESS Excelity is vulnerable to Reflected XSS in multiple endpoints. An attacker can prepare a specially crafted URL that, when opened, results in arbitrary JavaScript execution in the victim's browser. This issue was fixed in version V4.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Dayforce | ESS Excelity | 0 – before V4 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
References
- https://cert.pl/en/posts/2026/09/CVE-2026-73640 third-party-advisory
- https://hcm.excelityglobal.com/ESS product