CVE-2026-13381Network attack vector

Authenticated file access and deletion via remark tampering

Published Jul 20, 2026 · Updated Jul 20, 2026

IDOR in VSee Clinic 7.1.26 and API 1.3.0 allows remote authenticated users to read and delete other users' files. The /v1.3.0/api/files endpoint accepts the attacker-controlled remark parameter as a file reference without enforcing ownership during enumeration, retrieval, or deletion. A valid account is required, and successful exploitation exposes or removes files owned by other application users.

CVSS severity8.7
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

IDOR in VSee Clinic 7.1.26 and API 1.3.0 allows remote authenticated users to read and delete other users' files. The /v1.3.0/api/files endpoint accepts the attacker-controlled remark parameter as a file reference without enforcing ownership during enumeration, retrieval, or deletion. A valid account is required, and successful exploitation exposes or removes files owned by other application users.

The record

CVE
CVE-2026-13381
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
VSee Health
Product
VSee Clinic
Classifications
CWE-639, T1485, T1530
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 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.

  1. Affected versionversion=1.3.0 <1.3.0.1
  2. Affected versionversion=7.1.26 <7.1.26.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

VSee Health · VSee Clinicversion=1.3.0 <1.3.0.1; version=7.1.26 <7.1.26.1

Published CVSS scores

8.7Security Risk AdvisorsCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.1NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1485Data Destruction
T1530Data from Cloud Storage

Public exploit references

No public exploit references are available in this record.

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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