CVE-2026-126305
Published:November 13, 2026
Updated:November 13, 2026
EspoCRM before 9.3.11 and 10.x before 10.0.9 contains a stored cross-site scripting vulnerability in Knowledge Base articles that lets users with Knowledge Base create or edit access attach a JavaScript file and add a crafted link to the article body. When an administrator clicks the link, the script runs in their session and can create an administrator account with attacker-chosen credentials.
Affected Packages
https://github.com/espocrm/espocrm.git (GITHUB):
Affected version(s) >=5.5.0 <9.3.11 || >=6.0.0-beta1 <9.3.11 || >=7.0.0 <9.3.11 || >=8.0.0 <9.3.11 || >=9.0.0 <9.3.11Fix Suggestion:
Update to version 9.3.11https://github.com/espocrm/espocrm.git (GITHUB):
Affected version(s) >=10.0.0 <10.0.9Fix Suggestion:
Update to version 10.0.9Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.5
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation
EPSS
Base Score:
0.37