CVE-2026-32999 PUBLISHED

Assigner: hackerone
Reserved: 17.03.2026 Published: 28.05.2026 Updated: 28.05.2026

Insufficient character filtering in backup agent signing module on Comet Backup server allows authenticated tenant administrator to execute an arbitrary code on behalf of a privileged user on the affected server and connected devices.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS Score: 9.1

Attack Vector	Network	Scope	Changed
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	WebPros
Product	Comet Backup
Versions	Default: unaffected affected from 0 to 26.4.3 (excl.) affected from 0 to 26.5.0 (excl.)

References

https://support.cometbackup.com/hc/en-us/articles/40655100268439--CVE-2026-32999-RCE-on-Comet-Server-via-branding-configuration

Problem Types

CWE-94 Code Injection CWE