What is CVE-2021-47900?

CVE-2021-47900 is a critical-severity vulnerability in Gila Cms, classified under PHP Remote File Inclusion. CVSS score: 9.8/10. Published 2026-01-27.

How severe is CVE-2021-47900?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Gila Cms

CVE-2021-47900

Gila CMS versions prior to 2.0.0 contain a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary system commands through manipulated HTTP headers. Attackers can inject PHP code in the User-Agent hea…

EPSS: 0.006 (44.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Gila Cms — versions 0

Weakness classification (CWE)

CWE-98 — PHP Remote File Inclusion

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2021-47900?: CVE-2021-47900 is a critical-severity vulnerability in Gila Cms, classified under PHP Remote File Inclusion. CVSS score: 9.8/10. Published 2026-01-27.
How severe is CVE-2021-47900?: Critical severity. CVSS v3 base score is 9.8 out of 10.