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Guardian Language System EUVDEUVD-2026-41057

| CVE-2026-34100 CRITICAL
SQL Injection (CWE-89)
2026-07-01 VulnCheck GHSA-cfq6-4647-8w5h
SQLi PHP Language System
9.3
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
9.3 CRITICAL
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:X/V:X/RE:X/U:X
vuln.today AI
8.2 HIGH

Network-reachable id parameter with no interaction (AV:N/AC:L/UI:N); PR:N follows the advisory/CVSS despite the description's 'authenticated' claim; primary impact is full DB read (C:H), with only possible write (I:L) and no availability impact.

3.1 AV:N/AC:L/PR:N/UI:N/S:N/C:H/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

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:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

1
Analysis Generated
Jul 01, 2026 - 16:54 vuln.today

DescriptionCVE.org

Guardian language-system passes the id GET parameter directly into an unsanitized SQL query in media.php (line 17): SELECT id, filename, extension, type, duration, owner, private FROM files where id = '\".$_GET['id'].\"'. An authenticated attacker can perform error-based SQL injection to extract database contents.

Articles & Coverage 1

News Critical SQL Injection in PHP Guardian Language System media.php - CVE-2026-34100 Jul 02, 2026

AnalysisAI

Error-based SQL injection in Guardian Language System's media.php allows attackers to extract arbitrary database contents by injecting into the unsanitized 'id' GET parameter (CWE-89). Publicly available exploit code exists (published via a GitHub gist by VulnCheck), and the CVSS 4.0 vector (AV:N/AC:L/PR:N) plus the VulnCheck advisory title indicate unauthenticated network exploitation, though the CVE description conversely refers to an 'authenticated attacker' - a discrepancy defenders should verify. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify exposed media.php endpoint
Delivery
Send crafted id GET parameter
Exploit
Trigger error-based SQL injection
Execution
Extract database records
Impact
Exfiltrate credentials and sensitive data
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Vulnerability AssessmentAI

Exploitation Exploitation requires network access to the media.php endpoint and the ability to supply the 'id' GET parameter, which is passed unsanitized into the SQL query - the concrete prerequisite is simply reaching that URL. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Signals largely align toward genuine priority: CVSS 4.0 base 9.3 (Critical) with AV:N/AC:L/AT:N/PR:N/UI:N indicates trivial, no-interaction network exploitation, and a public exploit (gist) lowers the barrier further. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker sends an HTTP request to media.php with a crafted id parameter (e.g., id=1' AND extractvalue(...)-- ) to trigger a database error that leaks query results, then iterates to dump credentials, session tokens, or other tables. Because public exploit code exists in a GitHub gist and the CVSS vector shows AV:N/AC:L with no user interaction, this requires only network reachability to the endpoint and minimal skill.
Remediation No vendor-released patch or fixed version is identified in the available data, so remediation must rely on compensating controls. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all Guardian Language System instances and network exposure; assess risk; notify stakeholders and Guardian Language System vendor. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-41057 vulnerability details – vuln.today
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