CVE-2026-118686: EspoCRM before 9.3.11 and 10.0.8 Unauthenticated Denial of Service via Password-Redaction Regex
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.
Affected Software
Event History
Frequently Asked Questions
Which deployments are affected?
EspoCRM versions earlier than 9.3.11 and 10.x versions earlier than 10.0.8 are affected. The issue is reachable through API error handling.
Does exploitation require an account or user interaction?
No. An unauthenticated remote attacker can exploit the issue, and no user interaction is required.
What does an attacker need to do to cause impact?
An attacker can concurrently send a small number of large API requests. Processing the password-redaction regular expression on long request bodies can consume excessive CPU and exhaust server workers.
What is the expected impact?
The vulnerability is a denial of service condition. EspoCRM may become slow or unavailable to legitimate users when server workers are exhausted.