What is CVE-2018-11118?

CVE-2018-11118 is a medium-severity vulnerability in Ilias, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-05-17.

How severe is CVE-2018-11118?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Ilias

CVE-2018-11118

The RSS subsystem in ILIAS 5.1.x, 5.2.x, and 5.3.x before 5.3.5 has XSS via a URI to Services/Feeds/classes/class.ilExternalFeedItem.php.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-05-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.012 (67.9th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.012 · change: -0.000

Affected products

Ilias — versions 5.1.0, 5.2.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/ILIAS-eLearning/ILIAS/commit/d0dcad1b1e729f694acd0582bc626c7c8e62b519 (Patch, Third Party Advisory)
github.com/ILIAS-eLearning/ILIAS/commit/6b2217c31b6974788a5c787413454475687b44bb (Patch, Third Party Advisory)
www.ilias.de/docu/goto.php (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2018-11118?: CVE-2018-11118 is a medium-severity vulnerability in Ilias, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-05-17.
How severe is CVE-2018-11118?: Medium severity. CVSS v3 base score is 6.1 out of 10.