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@justice8096/sagemath-mcp-server: executes arbitrary code via the escapeShellString and sanitizeCode functions

High severity GitHub Reviewed Published Oct 23, 2026 to the GitHub Advisory Database • Updated Oct 29, 2026

Package

npm @justice8096/sagemath-mcp-server (npm)

Affected versions

<= 1.0.1

Patched versions

None

Description

An issue in @justice8096/sagemath-mcp-server 1.0.1 allows a remote attacker to execute arbitrary code via the escapeShellString and sanitizeCode functions.

References

Published by the National Vulnerability Database Oct 23, 2026
Published to the GitHub Advisory Database Oct 23, 2026
Reviewed Oct 29, 2026
Last updated Oct 29, 2026

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(44th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2026-106763

GHSA ID

GHSA-2vq3-mpmf-9xgr

Source code

Credits

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