Reflected XSS via crafted malicious link
Published Sep 15, 2026 · Updated Sep 15, 2026
Reflected cross-site scripting in Delinea Secret Server On-Premises 10.2.19 through 11.9.48 allows remote attackers to execute JavaScript. A crafted link causes attacker-supplied script content to execute in a legitimate user's browser, but Delinea has not publicly identified the affected endpoint, parameter, or response handler. Exploitation requires the legitimate user to follow the link; the available material does not establish whether authentication is also required.
Summary
What happened
Reflected cross-site scripting in Delinea Secret Server On-Premises 10.2.19 through 11.9.48 allows remote attackers to execute JavaScript. A crafted link causes attacker-supplied script content to execute in a legitimate user's browser, but Delinea has not publicly identified the affected endpoint, parameter, or response handler. Exploitation requires the legitimate user to follow the link; the available material does not establish whether authentication is also required.
The record
- CVE
- CVE-2026-15639
- Published
- Sep 15, 2026
- Updated
- Sep 15, 2026
- Vendor
- Delinea
- Product
- Secret Server On-Premises
- Classifications
- T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 15, 2026CVE publishedPublication date reported by the CVE source.
- Sep 15, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.2.19 <=11.9.48
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo