What is CVE-2025-14556?

CVE-2025-14556 is a medium-severity vulnerability in Drupal Flag, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-01-14.

How severe is CVE-2025-14556?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Drupal Flag

CVE-2025-14556

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Drupal Flag allows Cross-Site Scripting (XSS).This issue affects Flag: from 7.X-3.0 through 7.X-3.9.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (7.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Drupal Flag — versions 7.x-3.0
Flag_module_project Flag

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

mlhess@drupal.org (Exploit, vendor-advisory, Third Party Advisory)
mlhess@drupal.org (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2025-14556?: CVE-2025-14556 is a medium-severity vulnerability in Drupal Flag, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-01-14.
How severe is CVE-2025-14556?: Medium severity. CVSS v3 base score is 5.4 out of 10.