Univer 1.0.0-alpha.2 UniscriptExecutionService script-execution.service.ts UniscriptExecutionService.execute code injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.1$0-$5k0.00+

Summaryinfo

A vulnerability, which was classified as critical, was found in Univer 1.0.0-alpha.2. This affects the function UniscriptExecutionService.execute of the file /services/script-execution.service.ts of the component UniscriptExecutionService. Such manipulation leads to code injection. This vulnerability is traded as CVE-2026-88404. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Univer 1.0.0-alpha.2. It has been rated as critical. Affected by this issue is the function UniscriptExecutionService.execute of the file /services/script-execution.service.ts of the component UniscriptExecutionService. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-88404 since 09/10/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/21/2026). The MITRE ATT&CK project declares the attack technique as T1059.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/10/2026 CVE reserved
09/21/2026 +11 days Advisory disclosed
09/21/2026 +0 days VulDB entry created
09/21/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2026-88404 (🔒)
GCVE (CVE): GCVE-0-2026-88404
GCVE (VulDB): GCVE-100-408284

Entryinfo

Created: 09/21/2026 23:20
Changes: 09/21/2026 23:20 (55)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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