CVE-2020-26256
Fast-csv Regular Expression Denial of Service
Description
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.
INFO
Published Date :
Dec. 8, 2020, 10:15 p.m.
Last Modified :
Nov. 7, 2023, 3:20 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2020-26256 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-26256.
| URL | Resource |
|---|---|
| https://github.com/C2FO/fast-csv/commit/4bbd39f26a8cd7382151ab4f5fb102234b2f829e | Patch Third Party Advisory |
| https://github.com/C2FO/fast-csv/issues/540 | Third Party Advisory |
| https://github.com/C2FO/fast-csv/security/advisories/GHSA-8cv5-p934-3hwp | Third Party Advisory |
| https://lgtm.com/query/8609731774537641779/ | Exploit Third Party Advisory |
| https://www.npmjs.com/package/%40fast-csv/parse | |
| https://www.npmjs.com/package/fast-csv | Product Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
List of RegEx DoS (ReDoS) CVEs and resources
security awesome redos regex dos regex-dos pentesting awesome-list regex-security
None
JavaScript TypeScript
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-26256 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-26256 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference GitHub, Inc. https://www.npmjs.com/package/%40fast-csv/parse [No types assigned] Removed Reference GitHub, Inc. https://www.npmjs.com/package/@fast-csv/parse -
Reanalysis by [email protected]
Oct. 07, 2021
Action Type Old Value New Value -
Initial Analysis by [email protected]
Dec. 10, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/C2FO/fast-csv/commit/4bbd39f26a8cd7382151ab4f5fb102234b2f829e No Types Assigned https://github.com/C2FO/fast-csv/commit/4bbd39f26a8cd7382151ab4f5fb102234b2f829e Patch, Third Party Advisory Changed Reference Type https://github.com/C2FO/fast-csv/issues/540 No Types Assigned https://github.com/C2FO/fast-csv/issues/540 Third Party Advisory Changed Reference Type https://github.com/C2FO/fast-csv/security/advisories/GHSA-8cv5-p934-3hwp No Types Assigned https://github.com/C2FO/fast-csv/security/advisories/GHSA-8cv5-p934-3hwp Third Party Advisory Changed Reference Type https://lgtm.com/query/8609731774537641779/ No Types Assigned https://lgtm.com/query/8609731774537641779/ Exploit, Third Party Advisory Changed Reference Type https://www.npmjs.com/package/@fast-csv/parse No Types Assigned https://www.npmjs.com/package/@fast-csv/parse Product, Third Party Advisory Changed Reference Type https://www.npmjs.com/package/fast-csv No Types Assigned https://www.npmjs.com/package/fast-csv Product, Third Party Advisory Added CWE NIST CWE-400 Added CPE Configuration OR *cpe:2.3:a:c2fo:fast-csv:*:*:*:*:*:node.js:*:* versions up to (excluding) 4.3.6
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-26256 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-26256
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.81 }} 0.31%
score
0.79733
percentile