CVE-2021-21278 : RSSHub is an open source, easy to use, and extensible RSS feed generator. In RSS

RSSHub is an open source, easy to use, and extensible RSS feed generator. In RSSHub before version 7f1c430 (non-semantic versioning) there is a risk of code injection. Some routes use `eval` or `Function constructor`, which may be injected by the target site with unsafe code, causing server-side security issues The fix in version 7f1c430 is to temporarily remove the problematic route and added a `no-new-func` rule to eslint.

Published 2021-01-26 21:15:13

Updated 2021-02-04 16:25:06

Source GitHub, Inc.

View at NVD, CVE.org

Products affected by CVE-2021-21278

Rsshub » Rsshub » For Node.js
Versions before (<) 2021-01-25
cpe:2.3:a:rsshub:rsshub:*:*:*:*:*:node.js:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-21278

EPSS FAQ

0.58%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 78 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-21278

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
8.6	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N	3.9	4.0	GitHub, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: High Integrity: None Availability: None

CWE ids for CVE-2021-21278

CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Assigned by: security-advisories@github.com (Primary)

References for CVE-2021-21278

https://github.com/DIYgod/RSSHub/commit/7f1c43094e8a82e4d8f036ff7d42568fed00699d

feat: remove some routes for security reasons, !!! no-eval no-new-fun… · DIYgod/RSSHub@7f1c430 · GitHub
Patch;Third Party Advisory
https://www.npmjs.com/package/rsshub

rsshub - npm
Product;Third Party Advisory
https://github.com/DIYgod/RSSHub/security/advisories/GHSA-pgjj-866w-fc5c

Risk of code injection · Advisory · DIYgod/RSSHub · GitHub
Third Party Advisory

Jump to

Vulnerability Details : CVE-2021-21278

Products affected by CVE-2021-21278

Exploit prediction scoring system (EPSS) score for CVE-2021-21278

CVSS scores for CVE-2021-21278

CWE ids for CVE-2021-21278

References for CVE-2021-21278