High severity · published Apr 13, 2026
CVE-2026-30809
OS Command Injection in WebServerModuleDebug via Blacklist Bypass leads to Remote Code Execution
8.8
CVSS
0.9%
EPSS
No
On KEV
Description
Improper Neutralization of Special Elements used in an OS Command vulnerability allows OS Command Injection via WebServerModuleDebug. This issue affects Pandora FMS: from 777 through 800
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PF
Pandora FMS · Pandora FMS
777 through 800 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-30809
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-30809
Vendor Advisory
https://pandorafms.com/en/security/common-vulnerabilities-and-exposures/
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