What is CVE-2026-105831?

CVE-2026-105831 is a medium-severity vulnerability in Espocrm, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2026-10-08.

How severe is CVE-2026-105831?

Medium severity. CVSS v3 base score is 4.3 out of 10.

XSS in Espocrm

CVE-2026-105831

EspoCRM before 10.0.6 contains a stored HTML injection vulnerability that allows unauthenticated attackers to inject HTML by submitting crafted Lead Capture public form data. The request body is stored in LeadCaptureLogRecord.data and rendered unescaped when administrators view the log record, though Content Security Policy blocks JavaScript execution.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-08 · last modified 2026-10-08.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

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-79 — Cross-site Scripting

References

github.com/espocrm/espocrm/security/advisories/GHSA-xfqv-j65r-qqgh (vendor-advisory)
www.vulncheck.com/advisories/espocrm-before-10.0.6-unauthenticated-stored-html-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-105831?: CVE-2026-105831 is a medium-severity vulnerability in Espocrm, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2026-10-08.
How severe is CVE-2026-105831?: Medium severity. CVSS v3 base score is 4.3 out of 10.