EspoCRM before 10.0.4 Field-level Security Bypass via Attendees (CVE-2026-90934) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90934

EspoCRM before 10.0.4 Field-level Security Bypass via Attendees

Answer in brief

CVE-2026-90934 records a Unknown severity vulnerability in EspoCRM before 10.0.4 Field-level Security Bypass via Attendees. The current sources do not mark it as known exploited. The current feed maps espocrm/espocrm (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 14, 2026Updated Sep 14, 2026Source checked Sep 14, 2026First seen by HOL Sep 14, 2026Material review Sep 14, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps espocrm/espocrm (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
espocrm/espocrmgeneric	>=0 <10.0.4	10.0.4

Recommended response

Check inventory. Check lockfiles and deployed manifests for espocrm/espocrm.
Review the reported fix. Update espocrm/espocrm to 10.0.4 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 14, 2026

Sources and claim methodology

Upstream source description

EspoCRM before 10.0.4 contains a field-level security bypass vulnerability in the meeting and call attendees endpoints that allows authenticated users to read restricted email addresses. Attackers can recover hidden attendee emails by exploiting incorrect ACL scope validation that checks parent event permissions instead of attendee entity permissions.

Quoted source text, attributed separately from HOL analysis.