What is CVE-2026-18986?

CVE-2026-18986 is a medium-severity vulnerability in Drupal Entity Browser, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-09-02.

How severe is CVE-2026-18986?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Drupal Entity Browser

CVE-2026-18986

Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Entity Browser allows Stored XSS. This issue affects Entity Browser versions: from 0.0.0 to 2.16.0.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Drupal Entity Browser

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

mlhess@drupal.org

Frequently asked questions

What is CVE-2026-18986?: CVE-2026-18986 is a medium-severity vulnerability in Drupal Entity Browser, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-09-02.
How severe is CVE-2026-18986?: Medium severity. CVSS v3 base score is 4.8 out of 10.