What is CVE-2026-118686?

CVE-2026-118686 is a high-severity vulnerability in Espocrm, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2026-10-28.

How severe is CVE-2026-118686?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Espocrm

CVE-2026-118686

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.

Vulnerability class: ReDoS (Regular Expression Denial of Service)

Published 2026-10-28 · last modified 2026-10-28.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Espocrm

Weakness classification (CWE)

CWE-1333 — Inefficient Regular Expression Complexity

References

github.com/espocrm/espocrm/security/advisories/GHSA-6pjq-v35w-jmjh (vendor-advisory)
www.vulncheck.com/advisories/espocrm-before-9.3.11-and-10.0.8-unauthenticated-d… (third-party-advisory)

Frequently asked questions

What is CVE-2026-118686?: CVE-2026-118686 is a high-severity vulnerability in Espocrm, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2026-10-28.
How severe is CVE-2026-118686?: High severity. CVSS v3 base score is 7.5 out of 10.