How severe is CVE-2018-11118?

CVE-2018-11118 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-11118 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11118?

CVE-2018-11118 primarily affects Ilias. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-11118?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-11118 published?

CVE-2018-11118 was published on 2018-05-17 and last updated on 2026-06-17.

CVE-2018-11118

CVE-2018-11118 is a medium-severity vulnerability in Ilias with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ilias
Published: 2018-05-17
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2018-11118?: CVE-2018-11118 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-11118 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11118?: CVE-2018-11118 primarily affects Ilias. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-11118?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-11118 published?: CVE-2018-11118 was published on 2018-05-17 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:ilias:ilias:*:*:*:*:*:*:*:*
cpe:2.3:a:ilias:ilias:5.1.0:beta1:*:*:*:*:*:*
cpe:2.3:a:ilias:ilias:5.2.0:beta1:*:*:*:*:*:*
cpe:2.3:a:ilias:ilias:5.2.0:beta2:*:*:*:*:*:*
cpe:2.3:a:ilias:ilias:5.2.0:beta3:*:*:*:*:*:*

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