How severe is CVE-2019-11818?

CVE-2019-11818 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-2019-11818 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-11818?

CVE-2019-11818 affects Alkacon Opencms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-11818?

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

When was CVE-2019-11818 published?

CVE-2019-11818 was published on 2019-05-08 and last updated on 2026-06-17.

CVE-2019-11818

CVE-2019-11818 is a medium-severity vulnerability in Alkacon Opencms 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% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Alkacon Opencms
Published: 2019-05-08
Last modified: 2026-06-17

Description

Alkacon OpenCMS v10.5.4 and before is affected by stored cross site scripting (XSS) in the module New User (/opencms/system/workplace/admin/accounts/user_new.jsp). This allows an attacker to insert arbitrary JavaScript as user input (First Name or Last Name), which will be executed whenever the affected snippet is loaded.

Frequently asked questions

What is CVE-2019-11818?: Alkacon OpenCMS v10.5.4 and before is affected by stored cross site scripting (XSS) in the module New User (/opencms/system/workplace/admin/accounts/user_new.jsp). This allows an attacker to insert arbitrary JavaScript as user input (First Name or Last Name), which will be executed whenever the affected snippet is loaded.
How severe is CVE-2019-11818?: CVE-2019-11818 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-2019-11818 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-11818?: CVE-2019-11818 affects Alkacon Opencms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-11818?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-11818 published?: CVE-2019-11818 was published on 2019-05-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:alkacon:opencms:*:*:*:*:*:*:*:*

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