CVE-2026-13381: VSee Clinic 7.1.26 and API 1.3.0 contain an Insecure Direct Object Reference (IDOR) vulnerability in the /v1.3

Routine

HIGH 8.1DOWNGRADEDOWNGRADE

CVE-2026-13381 is a high-severity flaw (CVSS 8.1) affecting clinic, clinic api. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

VSee Clinic 7.1.26 and API 1.3.0 contain an Insecure Direct Object Reference (IDOR) vulnerability in the /v1.3.0/api/files endpoint. An authenticated attacker can manipulate the 'remark' request parameter to enumerate, retrieve, and delete files belonging to other users on the application server.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-639
Published	2026-07-20
Last modified	2026-10-24

Publisher (CNA): Security Risk Advisors · Vendor: vsee

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-20 21:16 UTCPublished CVE record published
2026-10-24 20:10 UTCUpdated Record last modified

vsee clinic DOWNGRADE

Affected: 7.1.26

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.1.26

1. Check installed version

apt-cache policy clinic || rpm -q clinic || clinic --version

2. No fixed release: DOWNGRADE to a release before 7.1.26 (Debian / Ubuntu)

apt-cache madison clinic sudo apt install clinic=<VERSION_BEFORE_7.1.26> sudo apt-mark hold clinic

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list clinic sudo dnf downgrade clinic-<VERSION_BEFORE_7.1.26> sudo dnf versionlock add clinic

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

vsee clinic api DOWNGRADE

Affected: 1.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.0

1. Check installed version

apt-cache policy clinic-api || rpm -q clinic-api || clinic-api --version

2. No fixed release: DOWNGRADE to a release before 1.3.0 (Debian / Ubuntu)

apt-cache madison clinic-api sudo apt install clinic-api=<VERSION_BEFORE_1.3.0> sudo apt-mark hold clinic-api

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list clinic-api sudo dnf downgrade clinic-api-<VERSION_BEFORE_1.3.0> sudo dnf versionlock add clinic-api

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-13381?

clinic: downgrade or apply the listed mitigation; clinic api: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-13381 being exploited?

CVE-2026-13381 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-13381 affect?

CVE-2026-13381 affects clinic, clinic api. Severity is high (CVSS 8.1). VSee Clinic 7.1.26 and API 1.3.0 contain an Insecure Direct Object Reference (IDOR) vulnerability in the /v1.3.0/api/files endpoint. An authenticated attacker can manipulate the 'remark' request parameter to enumerate, retrieve, and delete

How urgent is CVE-2026-13381?

Priority 36/100. High severity

Related CVEs

CVE-2026-13380 HIGH 7.5 DOWNGRADE DOWNGRADE VSee Clinic 7.1.26 and VSee Clinic API 1.3.0 exposes cleartext SFTP credentials in the HTTP responses of three

References

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