CVE-2026-85389Public exploitNetwork attack vectorHinoki check available

Cross-tenant data disclosure via unscoped task UUIDs

Published Sep 3, 2026 · Updated Sep 3, 2026

Authorization bypass in Worklenz before 3.0.0 allows remote authenticated users to read other tenants' task data through task UUIDs. Task-scoped handlers pass attacker-supplied UUIDs to queries filtered only by task_id, without confirming that the task belongs to the session's organization. Any account on a shared instance can retrieve work logs, comments, attachments, project insights, names, and email addresses from another tenant.

CVSS severity6.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authorization bypass in Worklenz before 3.0.0 allows remote authenticated users to read other tenants' task data through task UUIDs. Task-scoped handlers pass attacker-supplied UUIDs to queries filtered only by task_id, without confirming that the task belongs to the session's organization. Any account on a shared instance can retrieve work logs, comments, attachments, project insights, names, and email addresses from another tenant.

The record

CVE
CVE-2026-85389
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
Worklenz
Product
Worklenz
Classifications
CWE-639, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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 <3.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Worklenz · Worklenzversion=0 <3.0.0

Published CVSS scores

6.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
7.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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 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 exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
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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