CVE-2026-58589Network attack vector

Workflow execution via insufficient endpoint permission checks

Published Jul 10, 2026 · Updated Jul 10, 2026

Missing authorization in Drupal FlowDrop before 1.6.0 allows remote authenticated users to drive workflows through protected session endpoints. Certain session endpoints accept requests from accounts with View any session permission without additionally checking permission to execute the session workflow, enabling workflow runs and cross-session message injection. That permission is not assigned to anonymous or authenticated roles by default; successful requests can incur LLM charges and invoke configured tool side effects.

CVSS severity5.4
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Drupal FlowDrop before 1.6.0 allows remote authenticated users to drive workflows through protected session endpoints. Certain session endpoints accept requests from accounts with View any session permission without additionally checking permission to execute the session workflow, enabling workflow runs and cross-session message injection. That permission is not assigned to anonymous or authenticated roles by default; successful requests can incur LLM charges and invoke configured tool side effects.

The record

CVE
CVE-2026-58589
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
Avatar Uploader Project
Product
FlowDrop
Classifications
CWE-862, CAPEC-87, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 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=0.0.0 <1.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Avatar Uploader Project · FlowDropversion=0.0.0 <1.6.0

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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-862Missing Authorization
CAPEC-87Forceful Browsing
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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