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Vulnerability · Published Sep 17, 2026 · Assigned by VulDB

CVE-2026-92860rcourtman Pulse Quick Security Setup quick-setup fmt.Sprintf input validation

Critical 9.1

In plain English

A critical-severity improper input validation in Pulse from rcourtman. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 58% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.9%top 41.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

VendorProductVersions
rcourtman Pulse 6.0.06.0.16.0.26.0.36.0.46.1.0-rc.06.1.0-rc.16.1.0-rc.2

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:X/RL:O/RC:C

References