EspoCRM up to 9.3.10/10.0.7 Password Redaction resource consumption

Summaryinfo

A vulnerability described as problematic has been identified in EspoCRM up to 9.3.10/10.0.7. Affected is an unknown function of the component Password Redaction. Such manipulation leads to resource consumption. This vulnerability is traded as CVE-2026-118686. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in EspoCRM up to 9.3.10/10.0.7. It has been rated as problematic. Affected by this issue is an unknown code block of the component Password Redaction. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

EspoCRM before 9.3.11 and 10.x before 10.0.8 contains a denial of service vulnerability in which the password-redaction regular expression applied during API error handling consumes excessive CPU on long request bodies. Unauthenticated remote attackers can concurrently send a small number of large API requests to exhaust server workers, making EspoCRM slow or unavailable to legitimate users.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-118686 since 10/28/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 9.3.11 or 10.0.8 eliminates this vulnerability.

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Productinfo

Name

• EspoCRM

Version

• 9.3.0
• 9.3.1
• 9.3.2
• 9.3.3
• 9.3.4
• 9.3.5
• 9.3.6
• 9.3.7
• 9.3.8
• 9.3.9
• 9.3.10
• 10.0.0
• 10.0.1
• 10.0.2
• 10.0.3
• 10.0.4
• 10.0.5
• 10.0.6
• 10.0.7

License

• open-source

Website

• Product: https://github.com/espocrm/espocrm/

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