CVE-2026-78838: n/a
Description
A reflected cross-site scripting (XSS) vulnerability exists in the grid_datasource.php component of AppNitro MachForm v30. This flaw allows attackers to inject arbitrary JavaScript code via the filter[filters][0][field] parameter, which executes in the context of the victim's browser. The vulnerability has a CVSS score of 6.5, indicating a medium severity level. No affected versions or patch information are explicitly provided.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-78838 describes a reflected XSS vulnerability in AppNitro MachForm v30's grid_datasource.php component. Attackers can craft a malicious payload injected into the filter[filters][0][field] parameter, causing arbitrary JavaScript execution in the victim's browser session. This vulnerability does not require privileges or authentication but does require user interaction (UI:R). The impact is limited to confidentiality (C:H) with no integrity or availability impact. There is no information about patches or fixes.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary JavaScript in the victim's browser, potentially leading to theft of sensitive information accessible in the browser context. The vulnerability does not affect system integrity or availability. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should exercise caution with untrusted input and consider implementing web application firewall (WAF) rules to detect and block suspicious payloads targeting the filter[filters][0][field] parameter.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-08-25T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6aa00fe7acd9273b49b87b96
Added to database: 09/08/2026, 13:38:47 UTC
Last enriched: 09/16/2026, 02:05:41 UTC
Last updated: 10/24/2026, 03:05:11 UTC
Views: 133
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