CVE-2026-15342Public exploitNetwork attack vector

Cross-tenant asset theft and deletion via unchecked identifiers

Published Jul 21, 2026 · Updated Jul 21, 2026

Authorization bypass in Plane 1.3.0 and earlier allows remote authenticated users to read, copy, or delete assets across workspaces. WorkspaceFileAssetEndpoint scopes objects by the supplied workspace slug and asset ID without checking requester membership, while DuplicateAssetEndpoint authorizes only the destination workspace. Any user authenticated to one workspace who learns another workspace's slug and asset ID can obtain presigned file URLs, destroy assets, or persist copies in an attacker-controlled workspace.

CVSS severity6.5
Medium
EPSS probability0.38%
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 Plane 1.3.0 and earlier allows remote authenticated users to read, copy, or delete assets across workspaces. WorkspaceFileAssetEndpoint scopes objects by the supplied workspace slug and asset ID without checking requester membership, while DuplicateAssetEndpoint authorizes only the destination workspace. Any user authenticated to one workspace who learns another workspace's slug and asset ID can obtain presigned file URLs, destroy assets, or persist copies in an attacker-controlled workspace.

The record

CVE
CVE-2026-15342
Published
Jul 21, 2026
Updated
Jul 21, 2026
Vendor
Plane
Product
Plane
Classifications
CWE-639, CWE-552, T1565.001, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 21, 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 <=1.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Plane · Planeversion=0 <=1.3.0

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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 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
CWE-552Files or Directories Accessible to External Parties
T1565.001Stored Data Manipulation
T1213Data from Information Repositories

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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