Arbitrary OS Command Execution Vulnerability in Guardian Language System by Guardian
CVE-2026-34111

9.3CRITICAL

Key Information:

Vendor

Guardian

Status
Language-system
Vendor
CVE Published:
1 July 2026

Badges

👾 Exploit Exists

What is CVE-2026-34111?

The Guardian Language System exposes a serious security flaw where it directly passes the 'id' parameter from the URL into a PHP exec() function in the speechmac_text.php file without any input validation. This lack of sanitization allows an unauthenticated remote attacker to craft a request that appends shell metacharacters, leading to the execution of arbitrary OS commands on the server. Such vulnerabilities pose a significant risk, as they enable potential attackers to manipulate server processes to their advantage.

Affected Version(s)

language-system 0

References

https://gist.github.com/cyberinforepo/d5b2771d82e1b31b8fc...
technical-descriptionexploit
https://www.vulncheck.com/advisories/guardian-language-sy...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

philopentest
.