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Vulnerability record · CVE-2021-47900 · published 27 January 2026

CVE-2021-47900: PHP remote file inclusion vulnerability

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 header with shell_exec() to run system commands by sending crafted requests to the admin endpoint.

9.3 CVSS 4.0 Critical EPSS 0.70% · top 48.8% CWE-98 · PHP remote file inclusion Deferred
9.3CVSS 4.0 base score
0.70%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

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 header with shell_exec() to run system commands by sending crafted requests to the admin endpoint.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://gilacms.com/
https://github.com/GilaCMS/gila
https://www.exploit-db.com/exploits/49412
https://www.vulncheck.com/advisories/gila-cms-remote-code-execution

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.1CVE-2026-87902WordPress Core Remote File Inclusion VulnerabilityAn unauthenticated attacker can make `get_page_template()` page-template resolution include a chosen readable local `.php` file outside the active th…KEVEPSS 18%8.8CVE-2025-68645Zimbra Webmail Classic UI RestFilter local file inclusionZimbra Collaboration Suite 10.0 and 10.1 mishandle user-supplied parameters in the RestFilter servlet of the Webmail Classic UI, allowing local file …KEVEPSS 49%analysed

Source: NIST National Vulnerability Database (record CVE-2021-47900), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.