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9.4

rcourtman Pulse remote attacker can bypass username check

CVE-2026-92860 · published 26 days ago
Summary

The Quick Security Setup feature in rcourtman Pulse (versions up to 6.0.4 and 6.1.0-rc.4) does not properly validate the Username field, allowing a malicious user to send specially crafted data from anywhere on the internet. This could let an attacker interfere with the setup process or gain unauthorized access. Update Pulse to the latest version that includes the fix.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
rcourtman pulse 6.0.0
Original advisory text
rcourtman Pulse Quick Security Setup quick-setup fmt.Sprintf input validation
A security flaw has been discovered in rcourtman Pulse up to 6.0.4/6.1.0-rc.4. Affected by this issue is the function fmt.Sprintf of the file /api/security/quick-setup of the component Quick Security Setup Handler. The manipulation of the argument Username results in improper input validation. The attack may be performed from remote. Upgrading the affected component is advised.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
9.4 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-20Improper Input Validation
Timeline
Published17 Sep 2026
Updated12 Oct 2026
First seen17 Sep 2026
Sources
CVE-2026-92860 · NVD
CVE-2026-92860 · MITRE
CVE-2026-92860 · OSV
GHSA-rr3f-jjrr-3qxv · GHSA
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