Cross-tenant workflow disclosure via unscoped checkpoint IDs
Published Jun 28, 2026 · Updated Jun 28, 2026
IDOR in AIDC-AI ComfyUI-Copilot 2.0.0 through 2.0.28 allows remote authenticated users to read saved workflow checkpoints. The restore handler accepts a client-supplied integer version_id and queries the checkpoint row by that ID without checking its stored session or any owner, tenant, or permission context. Access to the restore endpoint is required, and sequential IDs expose workflow and UI data belonging to other sessions without enabling modification or service interruption.
Summary
What happened
IDOR in AIDC-AI ComfyUI-Copilot 2.0.0 through 2.0.28 allows remote authenticated users to read saved workflow checkpoints. The restore handler accepts a client-supplied integer version_id and queries the checkpoint row by that ID without checking its stored session or any owner, tenant, or permission context. Access to the restore endpoint is required, and sequential IDs expose workflow and UI data belonging to other sessions without enabling modification or service interruption.
The record
- CVE
- CVE-2026-13493
- Published
- Jun 28, 2026
- Updated
- Jun 28, 2026
- Vendor
- AIDC-AI
- Product
- ComfyUI-Copilot
- Classifications
- CWE-99, T1213
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 28, 2026CVE publishedPublication date reported by the CVE source.
- Jun 28, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.0.0
- Affected versionversion=2.0.1
- Affected versionversion=2.0.10
- Affected versionversion=2.0.11
- Affected versionversion=2.0.12
- Affected versionversion=2.0.13
- Affected versionversion=2.0.14
- Affected versionversion=2.0.15
- Affected versionversion=2.0.16
- Affected versionversion=2.0.17
- Affected versionversion=2.0.18
- Affected versionversion=2.0.19
- Affected versionversion=2.0.2
- Affected versionversion=2.0.20
- Affected versionversion=2.0.21
- Affected versionversion=2.0.22
- Affected versionversion=2.0.23
- Affected versionversion=2.0.24
- Affected versionversion=2.0.25
- Affected versionversion=2.0.26
- Affected versionversion=2.0.27
- Affected versionversion=2.0.28
- Affected versionversion=2.0.3
- Affected versionversion=2.0.4
- Affected versionversion=2.0.5
- Affected versionversion=2.0.6
- Affected versionversion=2.0.7
- Affected versionversion=2.0.8
- Affected versionversion=2.0.9
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Issue 149 checkpoint restore proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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