What is the CVSS score of CVE-2020-26256?

CVE-2020-26256 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 1.5%.

Is there a public PoC exploit available for CVE-2020-26256?

Yes, a public proof-of-concept exploit is available for CVE-2020-26256. Prioritise patching immediately. EPSS: 1.5%.

Is there a patch available for CVE-2020-26256?

Yes, a patch is available for CVE-2020-26256. Update the affected software to the latest version immediately.

Node.js CVE-2020-26256

MEDIUM

Uncontrolled Resource Consumption (CWE-400)

2020-12-08 security-advisories@github.com

Denial Of Service Node.js Fast Csv

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Dec 08, 2020 - 22:15 nvd

MEDIUM 6.5

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

6,006 npm packages depend on @fast-csv/parse (280 direct, 5,730 indirect)
5,720 npm packages depend on fast-csv (556 direct, 5,170 indirect)

Ecosystem-wide dependent count for version 4.3.6 and other introduced versions.

DescriptionNVD

Fast-csv is an npm package for parsing and formatting CSVs or any other delimited value file in node. In fast-cvs before version 4.3.6 there is a possible ReDoS vulnerability (Regular Expression Denial of Service) when using ignoreEmpty option when parsing. This has been patched in v4.3.6 You will only be affected by this if you use the ignoreEmpty parsing option. If you do use this option it is recommended that you upgrade to the latest version v4.3.6 This vulnerability was found using a CodeQL query which identified EMPTY_ROW_REGEXP regular expression as vulnerable.

AnalysisAI

Fast-csv is an npm package for parsing and formatting CSVs or any other delimited value file in node. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Uncontrolled Resource Consumption (CWE-400), which allows attackers to cause denial of service by exhausting system resources. Fast-csv is an npm package for parsing and formatting CSVs or any other delimited value file in node. In fast-cvs before version 4.3.6 there is a possible ReDoS vulnerability (Regular Expression Denial of Service) when using ignoreEmpty option when parsing. This has been patched in v4.3.6 You will only be affected by this if you use the ignoreEmpty parsing option. If you do use this option it is recommended that you upgrade to the latest version v4.3.6 This vulnerability was found using a CodeQL query which identified EMPTY_ROW_REGEXP regular expression as vulnerable. Affected products include: C2Fo Fast-Csv. Version information: version 4.3.6.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Implement rate limiting, set resource quotas, validate input sizes, use timeouts.