jquery-deparam 0.5.1 Prototype Object.prototype code injection

CVSS Meta Temp Score
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CTI Interest Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability was found in jquery-deparam 0.5.1. It has been rated as critical. Affected by this issue is the function Object.prototype of the component Prototype Handler. This manipulation causes code injection. This vulnerability is registered as CVE-2021-20087. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in jquery-deparam 0.5.1 (JavaScript Library). Affected by this vulnerability is the function Object.prototype of the component Prototype Handler. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 04/24/2021. The advisory is shared at github.com. This vulnerability is known as CVE-2021-20087. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

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

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Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

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

12/17/2020 🔍
04/24/2021 +127 days 🔍
04/24/2021 +0 days 🔍
08/14/2025 +1573 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2021-20087 (🔍)
GCVE (CVE): GCVE-0-2021-20087
GCVE (VulDB): GCVE-100-173845

Entryinfo

Created: 04/24/2021 09:46
Updated: 08/14/2025 23:23
Changes: 04/24/2021 09:46 (37), 04/29/2021 12:44 (2), 08/14/2025 23:23 (33)
Complete: 🔍
Cache ID: 216::103

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