CVE-2020-7777 - CVE House
Back to Database
Status published High CVE-2020-7777

Arbitrary Code Execution

Vulnerability Description

This affects all versions of package jsen. If an attacker can control the schema file, it could run arbitrary JavaScript code on the victim machine. In the module description and README file there is no mention about the risks of untrusted schema files, so I assume that this is applicable. In particular the required field of the schema is not properly sanitized. The resulting string that is build based on the schema definition is then passed to a Function.apply();, leading to an Arbitrary Code Execution.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-7777

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Alessio Della Libera (d3lla)

References

More from n/a

View All →
CVE-2025-9910
Versions of the package jsondiffpatch before 0.7.2 are vulnerable to...
Low 2.3
CVE-2025-9802
RemoteClinic profile.php sql injection
Medium 5.1
CVE-2025-9799
Langfuse Webhook promptRouter.ts promptChangeEventSourcing server-side request forgery
Low 2.3
CVE-2025-9775
RemoteClinic edit-my-profile.php unrestricted upload
Medium 6.9
CVE-2025-9774
RemoteClinic edit-patient.php information disclosure
Medium 5.3

Affected Vendor

Affected Software

jsen
Vulnerable Versions:
0

Timeline

Official Publish: November 23rd, 2020
Last Modified: September 17th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.