---
id: CVE-2026-15639
title: >-
  An attacker can craft a malicious link that, if used by a legitimate user, may
  cause the user's browser to run JavaScript supplied by the attacker.
summary: >-
  An attacker can craft a malicious link that, if used by a legitimate user, may
  cause the user's browser to run JavaScript supplied by the attacker.
severity: critical
cvss: 9.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H'
cwe:
  - CWE-79
vendor: Delinea
product: Secret Server (On-Prem)
affected:
  - secret_server_on-prem >= 10.2.19 <= 11.9.48
published: '2026-09-16'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T19:34:36.657'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15639'
references:
  - url: 'https://delinea.com/security-advisories'
    label: 1443cd92-d354-46d2-9290-d812316ca43a
tags:
  - nvd
  - cve.org
epss: 0.00393
epssPercentile: 0.30759
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-16T19:37:11.146700Z'
cvssSource: cna
ingestedAt: '2026-09-15T23:46:25.571Z'
---

## Overview

An attacker can craft a malicious link that, if used by a legitimate user, may cause the user's browser to run JavaScript supplied by the attacker.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.