CVE-2026-85392Public exploitNetwork attack vector

Cross-account session termination via unchecked user ID

Published Sep 3, 2026 · Updated Sep 4, 2026

Authorization bypass in Peppermint 0 through 0.5.5 allows remote authenticated users to terminate any user's active sessions. The GET /api/v1/auth/user/:id/logout handler passes the caller-supplied ID directly to prisma.session.deleteMany without verifying account ownership. Any signed-in user can force another user, including an administrator, to reauthenticate; no data access or modification is reported.

CVSS severity5.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Peppermint 0 through 0.5.5 allows remote authenticated users to terminate any user's active sessions. The GET /api/v1/auth/user/:id/logout handler passes the caller-supplied ID directly to prisma.session.deleteMany without verifying account ownership. Any signed-in user can force another user, including an administrator, to reauthenticate; no data access or modification is reported.

The record

CVE
CVE-2026-85392
Published
Sep 3, 2026
Updated
Sep 4, 2026
Vendor
Peppermint Labs
Product
Peppermint
Classifications
CWE-639, T1531
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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=0 <=0.5.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Peppermint Labs · Peppermintversion=0 <=0.5.5

Published CVSS scores

4.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1531Account Access Removal

Public exploit references

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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