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osCommerce CVE-2026-18592

| EUVDEUVD-2026-52221 LOW
SQL Injection (CWE-89)
2026-08-03 VulDB GHSA-fc65-w3rc-9v2m
2.0
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
2.0 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
4.7 MEDIUM

Admin backend reachable over network (AV:N), but PR:H reflects mandatory admin authentication; limited C/I/A impact consistent with constrained second-order SQLi scope against a single application database.

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

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
High
User Interaction
None
Scope
X

Lifecycle Timeline

4
Severity Changed
Aug 03, 2026 - 08:37 NVD
MEDIUM LOW
CVSS changed
Aug 03, 2026 - 08:37 NVD
5.1 (MEDIUM) 2.0 (LOW)
Analysis Generated
Aug 03, 2026 - 08:26 vuln.today
CVE Published
Aug 03, 2026 - 07:30 cve.org
MEDIUM 5.1

DescriptionCVE.org

A security flaw has been discovered in osCommerce 4.14.63493. Affected by this issue is the function EmailController of the file app/lib/backend/controllers/EmailController.php of the component Email Template Configuration. Performing a manipulation of the argument email_templates_key results in sql injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Second-order SQL injection in osCommerce 4.14.63493 allows remote attackers with high-privilege (administrator-level) backend access to manipulate the email_templates_key parameter in the Email Template Configuration component, enabling database extraction and modification. Public exploit code is confirmed available via an anonymous repository hosting a detailed second-order SQLi report. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Recon
Obtain admin credentials (phishing or brute force)
Delivery
Authenticate to osCommerce backend
Exploit
Navigate to Email Template Configuration
Install
Submit crafted SQL payload in email_templates_key
C2
Payload persisted to database
Execute
Trigger retrieval operation to execute stored payload
Impact
Extract or modify database contents

Vulnerability AssessmentAI

Exploitation Exploitation requires an active authenticated session with high-privilege (administrator-level) access to the osCommerce backend - confirmed by CVSS PR:H. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 5.1 (Medium) accurately reflects the constrained exploitation profile: PR:H mandates authenticated administrator-level access before the injection can be triggered, substantially narrowing the viable attacker pool to insiders, compromised admin accounts, or social-engineering scenarios. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has compromised or controls an osCommerce administrator account navigates to the Email Template Configuration page and submits a crafted value for the `email_templates_key` parameter containing a SQL injection payload. Because this is a second-order injection, the malicious payload is first stored in the database without triggering immediate sanitization; when the application subsequently retrieves and processes the stored template key, the SQL payload executes in the database context, allowing the attacker to extract credential hashes, customer PII, or payment data from the database. …
Remediation No vendor-released patch is available at time of analysis - the vendor did not respond to responsible disclosure, and no fix version has been confirmed. … Detailed patch versions, workarounds, and compensating controls in full report.

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

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CVE-2026-18592 vulnerability details – vuln.today

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