Authentication Vulnerability in EspoCRM by EspoCRM
CVE-2020-37094

8.7HIGH

Key Information:

Vendor

Espocrm

Status
Espocrm
Vendor
CVE Published:
3 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-37094?

EspoCRM version 5.8.5 is susceptible to an authentication vulnerability that enables attackers to gain unauthorized access to other user accounts. By manipulating authorization headers, including Basic Authorization and Espo-Authorization tokens, an attacker can decode and alter these tokens, potentially accessing sensitive administrative user information and privileges. This vulnerability poses a significant risk, emphasizing the need for immediate attention to secure affected installations.

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Affected Version(s)

EspoCRM 5.8.5

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-2020-37094 - Proof of Concept

References

https://www.exploit-db.com/exploits/48376
exploit
https://www.espocrm.com
product
https://www.vulncheck.com/advisories/espocrm-privilege-es...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
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

Besim ALTINOK, İsmail BOZKURT
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