How severe is CVE-2019-20803?

CVE-2019-20803 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-2019-20803 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20803?

CVE-2019-20803 affects Gilacms Gila Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-20803?

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

When was CVE-2019-20803 published?

CVE-2019-20803 was published on 2020-05-21 and last updated on 2026-06-17.

CVE-2019-20803

CVE-2019-20803 is a medium-severity vulnerability in Gilacms Gila Cms 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: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Gilacms Gila Cms
Published: 2020-05-21
Last modified: 2026-06-17

Description

Gila CMS before 1.11.6 has reflected XSS via the admin/content/postcategory id parameter, which is mishandled for g_preview_theme.

Frequently asked questions

What is CVE-2019-20803?: Gila CMS before 1.11.6 has reflected XSS via the admin/content/postcategory id parameter, which is mishandled for g_preview_theme.
How severe is CVE-2019-20803?: CVE-2019-20803 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-2019-20803 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20803?: CVE-2019-20803 affects Gilacms Gila Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-20803?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-20803 published?: CVE-2019-20803 was published on 2020-05-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gilacms:gila_cms:*:*:*:*:*:*:*:*

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