CVE-2026-75505Network attack vectorHinoki check available

Attachment disclosure via unchecked Mass Update attachment copying

Published Oct 15, 2026 · Updated Oct 15, 2026

Access control bypass in EspoCRM before 10.0.2 allows remote authenticated users to read restricted files through Mass Update. In application/Espo/Tools/MassUpdate/Processor.php, copyFileField and copyAttachmentMultipleField duplicate attachments identified by caller-supplied IDs without checking read access. Exploitation requires Mass Update permission and a valid attachment ID, exposing copied file contents despite record-level and field-level restrictions.

CVSS severity6.0
Medium
EPSS probability0.29%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Access control bypass in EspoCRM before 10.0.2 allows remote authenticated users to read restricted files through Mass Update. In application/Espo/Tools/MassUpdate/Processor.php, copyFileField and copyAttachmentMultipleField duplicate attachments identified by caller-supplied IDs without checking read access. Exploitation requires Mass Update permission and a valid attachment ID, exposing copied file contents despite record-level and field-level restrictions.

The record

CVE
CVE-2026-75505
Published
Oct 15, 2026
Updated
Oct 15, 2026
Vendor
EspoCRM
Product
EspoCRM
Classifications
CWE-862, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 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=< 10.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

EspoCRM · EspoCRMversion=< 10.0.2

Published CVSS scores

6.0GitHub_MCVSS:4.0/AV:N/AC:H/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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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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