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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (35.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-18147 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- access.redhat.com/errata/RHSA-2026:70564 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:72279 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:82935 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:83083 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:83085 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:83084 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:83460 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:83461 (vendor-advisory)
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.