ByteOS Network

Vulnerability Details :

CVE-2026-29200

Assigner Org ID-36234546-b8fa-4601-9d6f-f4e334aa8ea1

Published At-04 May, 2026 | 05:42

Updated At-04 May, 2026 | 19:44

A critical IDOR vulnerability has been discovered in Comet Backup affecting all versions from 20.11.0 to 26.1.1 and 26.2.1. The vulnerability allows a tenant administrator to impersonate any end-user account of other tenants on the same server via a vulnerable API call.

EPSS History

Score

Latest Score

N/A

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Latest Percentile

N/A

▼Common Vulnerabilities and Exposures (CVE)

cve.org

Assigner:hackerone

Assigner Org ID:36234546-b8fa-4601-9d6f-f4e334aa8ea1

Published At:04 May, 2026 | 05:42

Updated At:04 May, 2026 | 19:44

▼CVE Numbering Authority (CNA)

Affected Products

Vendor

WebPros

Product

Comet Backup

Default Status

unaffected

Versions

Affected

From 20.11.0 before 26.1.2 (semver)
From 26.2.0 before 26.2.2 (semver)

Problem Types

Type	CWE ID	Description
CWE	CWE-639	CWE-639 Insecure Direct Object Reference (IDOR)

Type: CWE

CWE ID: CWE-639

Description: CWE-639 Insecure Direct Object Reference (IDOR)

Metrics

Version	Base score	Base severity	Vector
4.0	9.9	CRITICAL	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:H

Version: 4.0

Base score: 9.9

Base severity: CRITICAL

Vector:

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:H

References

Hyperlink	Resource
https://support.cometbackup.com/hc/en-us/articles/40090945484823--CVE-2026-29200-%D0%A1ritical-IDOR-vulnerability-in-Comet-Backup	N/A

Hyperlink: https://support.cometbackup.com/hc/en-us/articles/40090945484823--CVE-2026-29200-%D0%A1ritical-IDOR-vulnerability-in-Comet-Backup

Resource: N/A

▼Authorized Data Publishers (ADP)

CISA ADP Vulnrichment

Metrics Other Info

▼National Vulnerability Database (NVD)

nvd.nist.gov

Source:support@hackerone.com

Published At:04 May, 2026 | 07:16

Updated At:06 May, 2026 | 19:05

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	4.0	9.9	CRITICAL	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Type: Secondary

Version: 4.0

Base score: 9.9

Base severity: CRITICAL

Vector:

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE ID	Type	Source
CWE-639	Secondary	support@hackerone.com

CWE ID: CWE-639

Type: Secondary

Source: support@hackerone.com

References

Hyperlink	Source	Resource
https://support.cometbackup.com/hc/en-us/articles/40090945484823--CVE-2026-29200-%D0%A1ritical-IDOR-vulnerability-in-Comet-Backup	support@hackerone.com	N/A

Hyperlink: https://support.cometbackup.com/hc/en-us/articles/40090945484823--CVE-2026-29200-%D0%A1ritical-IDOR-vulnerability-in-Comet-Backup

Source: support@hackerone.com

Resource: N/A

CVE-2026-29200

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