Authorization Bypass Vulnerability in EspoCRM's PDF Rendering Component
CVE-2026-113643

5.3MEDIUM

Key Information:

Vendor

EspoCRM

Status
Espocrm
Vendor
CVE Published:
20 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-113643?

A critical security flaw has been identified in the PDF Rendering Pipeline of EspoCRM. This vulnerability exists in the ImageSourceProvider::get function, located in ImageSourceProvider.php. An attacker can exploit this flaw by manipulating the argument ID, leading to unauthorized access to resources. The attack can be executed remotely, making it imperative for users of affected versions to apply the patch immediately to secure their systems.

Affected Version(s)

EspoCRM 9.3.0

EspoCRM 9.3.1

EspoCRM 9.3.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-113643 - Proof of Concept

CVE-2026-113643 - Proof of Concept

CVE-2026-113643 - Proof of Concept

References

https://vuldb.com/vuln/422794
vdb-entrytechnical-description
https://vuldb.com/vuln/422794/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-113643
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

spoo1k (VulDB User)
.