CVE-2026-33656CRITICAL 9.1EPSS p38.8%

CVE-2026-33656CVE-2026-33656

Description

EspoCRM is an open source customer relationship management application. Prior to version 9.3.4, EspoCRM's built-in formula scripting engine allowing updating attachment's sourceId thus allowing an authenticated admin to overwrite the `sourceId` field on `Attachment` entities. Because `sourceId` is concatenated directly into a file path with no sanitization in `EspoUploadDir::getFilePath()`, an attacker can redirect any file read or write operation to an arbitrary path within the web server's `open_basedir` scope. Version 9.3.4 fixes the issue.

Scoring

CVSS 3.19.1 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS0.50% probability of exploitation · percentile 38.8% · 2026-06-19T12:03:05Z
Published2026-04-22
Last modified2026-04-27

Underlying weaknesses· 1

CWE-22

References

  1. https://github.com/espocrm/espocrm/security/advisories/GHSA-7922-x7cf-j54x
  2. https://github.com/espocrm/espocrm/security/advisories/GHSA-7922-x7cf-j54x

1

TypeTargetConfidenceTier
WeaknessImproper Limitation of a Pathname to a Restricted Directory ('Path Traversal')cwe-220%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.