SB2026111223 - Exposed dangerous method or function in asteval

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Main Vulnerability Database SB2026111223

SB2026111223 - Exposed dangerous method or function in asteval

Published: November 12, 2026

Security Bulletin ID SB2026111223
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Exposed dangerous method or function (CVE-ID: CVE-2026-102734)

CWE-ID: CWE-749 - Exposed Dangerous Method or Function

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to escape sandbox restrictions and cause a denial of service.

The vulnerability exists due to exposure of dangerous ctypes methods and unfiltered attribute writes in asteval's Interpreter when evaluating untrusted expressions with numpy enabled. A remote attacker can induce an application to evaluate crafted expressions accessing from_address through ndarray.ctypes.shape._type_ and overwrite native memory to crash the host process.


Remediation

Install update from vendor's website.

References