What is CVE-2026-18147?

CVE-2026-18147 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2026-09-09.

How severe is CVE-2026-18147?

High severity. CVSS v3 base score is 8.1 out of 10.

XSS in Red Hat Enterprise Linux 10

CVE-2026-18147

A flaw was found in FreeIPA. An unauthenticated remote attacker could exploit a DOM Cross-Site Scripting (XSS) vulnerability in the FreeIPA/IdM Web UI password reset page. By enticing a victim to click a specially crafted link and complete a password reset, the attacker could inject and execute arbitrary JavaScript code. This allows the attacker to perform actions within the victim's authenticated session, potentially leading to full administrative control if an IdM administrator is targeted.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking)

Frequently asked questions

What is CVE-2026-18147?: CVE-2026-18147 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2026-09-09.
How severe is CVE-2026-18147?: High severity. CVSS v3 base score is 8.1 out of 10.