How severe is CVE-2018-12339?

CVE-2018-12339 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-12339 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-12339?

CVE-2018-12339 affects Articlecms Project Articlecms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-12339?

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

When was CVE-2018-12339 published?

CVE-2018-12339 was published on 2018-06-13 and last updated on 2026-06-17.

CVE-2018-12339

CVE-2018-12339 is a medium-severity vulnerability in Articlecms Project Articlecms with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Articlecms Project Articlecms
Published: 2018-06-13
Last modified: 2026-06-17

Description

ArticleCMS through 2017-02-19 has XSS via an "add an article" action.

Frequently asked questions

What is CVE-2018-12339?: ArticleCMS through 2017-02-19 has XSS via an "add an article" action.
How severe is CVE-2018-12339?: CVE-2018-12339 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-12339 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-12339?: CVE-2018-12339 affects Articlecms Project Articlecms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-12339?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-12339 published?: CVE-2018-12339 was published on 2018-06-13 and last updated on 2026-06-17.

References

https://github.com/woider/ArticleCMS/issues/4

Affected products (1)

cpe:2.3:a:articlecms_project:articlecms:*:*:*:*:*:*:*:*

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