CVE-2026-88404

Deferred Deferred - Pending Action

Remote Code Execution in Univer

Publication date: 2026-09-21

Last updated on: 2026-09-22

Assigner: MITRE

Description

A remote code execution (RCE) vulnerability in the UniscriptExecutionService.execute() function (/services/script-execution.service.ts) of Univer v1.0.0-alpha.2 allows attackers to execute arbitrary code via a crafted payload.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-21

Last Modified

2026-09-22

Generated

2026-10-12

AI Q&A

2026-09-22

EPSS Evaluated

2026-10-10

NVD

CVE-2026-88404

Affected Vendors & Products

Vendor	Product	Version / Range
univer	univer	1.0.0-alpha.2

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-94	The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

Executive Summary

This is a remote code execution (RCE) vulnerability in Univer v1.0.0-alpha.2. It exists in the UniscriptExecutionService.execute() function located at /services/script-execution.service.ts. Attackers can exploit this by sending a specially crafted payload to execute arbitrary code on the affected system.

Detection Guidance

Since this is a remote code execution vulnerability in Univer v1.0.0-alpha.2, detection involves checking for suspicious script execution activity or unauthorized payloads. Monitor logs for the UniscriptExecutionService.execute() function calls with unexpected inputs. Inspect network traffic for unusual outbound connections from the service. No specific commands are provided in the context.

Impact Analysis

This vulnerability allows attackers to run malicious code on your system remotely. This could lead to unauthorized access, data theft, system damage, or further compromise of your environment. If you use Univer v1.0.0-alpha.2, your system may be at risk of these attacks.

Compliance Impact

This vulnerability allows remote code execution, which could lead to unauthorized access to sensitive data. This may violate GDPR's data protection requirements and HIPAA's security rules for protected health information if exploited.

Mitigation Strategies

Immediately update Univer to the latest patched version to address the RCE vulnerability in the script execution service. If an update is unavailable, disable the UniscriptExecutionService.execute() function or restrict network access to the service until a fix is applied.

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