RCE in Guardian Language-System
CVE-2026-34111
Guardian language-system passes the id GET parameter directly into a PHP exec() call in speechmac_text.php (line 18) without sanitization: exec(\"php jobs/speech_audio_mac_text.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. An unauthenticated remote attacker can append shell metacharacters to execute arbitrary OS commands on the server.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.009 (59.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Guardian Language-System — versions 0
Weakness classification (CWE)
References
- gist.github.com/cyberinforepo/d5b2771d82e1b31b8fc1c33052e08dad (technical-description, exploit)
- www.vulncheck.com/advisories/guardian-language-system-unauthenticated-os-comman… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-34111?
- CVE-2026-34111 is a critical-severity vulnerability in Guardian Language-System, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-07-01.
- How severe is CVE-2026-34111?
- Critical severity. CVSS v3 base score is 9.8 out of 10.