Vulnerability · Published Sep 28, 2026 · Assigned by CERT-PL

CVE-2026-73640Time-based SQL Injection in Dayforce ESS Excelity

Critical 9.3

In plain English

A critical-severity SQL injection 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 22% of all known vulnerabilities).

Severity (CVSS 4.0)9.3Critical

Exploit odds (30 days)0.3%top 78.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Dayforce ESS Excelity is vulnerable to Time Based-Blind SQL Injection in password recovery functionality. The unauthenticated attacker can prepare GET request with one of the parameters filled in with an arbitrary SQL query. The parameter is interpreted as part of SQL predicate resulting in Time-Based Blind SQL Injection. This issue was fixed in version V3.

Affected products (as reported)

Vendor	Product	Versions
Dayforce	ESS Excelity	0 – before V3

Weakness: CWE-89 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

References

https://cert.pl/en/posts/2026/09/CVE-2026-73640 third-party-advisory
https://ess.Exceltiyglobal.com product