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AppNitro MachForm CVE-2026-78837

| EUVDEUVD-2026-72851 HIGH
SQL Injection (CWE-89)
2026-09-08 mitre GHSA-c599-5cff-pc49
7.5
CVSS 3.1 · Vendor: mitre
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Severity by source

Vendor (mitre) PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
vuln.today AI
7.5 HIGH

Public form endpoint reachable with no auth; read-only SQLi yields high confidentiality loss with no integrity or availability impact.

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

Primary rating from Vendor (mitre).

CVSS VectorVendor: mitre

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

5
Metadata Corrected
Sep 09, 2026 - 22:40 vuln.today
tag: N A removed
Analysis Generated
Sep 09, 2026 - 21:40 vuln.today
CVSS changed
Sep 09, 2026 - 19:22 NVD
7.5 (HIGH)
CVE Published
Sep 08, 2026 - 00:00 cve.org
HIGH 7.5
CVE Published
Sep 08, 2026 - 00:00 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

A SQL injection vulnerability in the ap_form_{id} parameter in AppNitro MachForm v30 allows attackers to access sensitive database information via a crafted SQL statement.

AnalysisAI

SQL injection in AppNitro MachForm v30 exposes sensitive database contents to unauthenticated remote attackers via the ap_form_{id} parameter. An attacker can craft a malicious SQL statement targeting this parameter to read arbitrary data from the underlying database, including credentials, form submissions, and configuration data. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Impact
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Vulnerability AssessmentAI

Exploitation The targeted MachForm v30 instance must be network-accessible to the attacker, which is the typical deployment model for a web-based form builder. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The provided CVSS base score of 7.5 reflects accurate metrics: network-accessible, low complexity, no authentication, and high confidentiality impact with no integrity or availability loss. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch has been identified at time of analysis - neither the PacketStorm reference nor the GitHub PoC repository provides a vendor fix version or advisory URL. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify all instances of AppNitro MachForm v30 in your environment and implement network-level access restrictions (external block, internal VPN requirement only); examine database logs for evidence of SQL injection attempts targeting the ap_form_id parameter. …

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CVE-2026-78837 vulnerability details – vuln.today

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