What is the CVSS score of CVE-2020-7642?

CVE-2020-7642 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.9%.

Is there a public PoC exploit available for CVE-2020-7642?

Yes, a public proof-of-concept exploit is available for CVE-2020-7642. Prioritise patching immediately. EPSS: 0.9%.

Is there a patch available for CVE-2020-7642?

Yes, a patch is available for CVE-2020-7642. Update the affected software to the latest version immediately.

Lazysizes CVE-2020-7642

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2020-04-22 report@snyk.io

XSS Lazysizes

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

Apr 22, 2020 - 16:15 nvd

MEDIUM 5.4

Blast Radius

ecosystem impact

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

1 npm packages depend on lazysizes (1 direct, 0 indirect)

Ecosystem-wide dependent count for version 5.2.1.

DescriptionNVD

lazysizes through 5.2.0 allows execution of malicious JavaScript. The following attributes are not sanitized by the video-embed plugin: data-vimeo, data-vimeoparams, data-youtube and data-ytparams which can be abused to inject malicious JavaScript.

AnalysisAI

lazysizes through 5.2.0 allows execution of malicious JavaScript. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. lazysizes through 5.2.0 allows execution of malicious JavaScript. The following attributes are not sanitized by the video-embed plugin: data-vimeo, data-vimeoparams, data-youtube and data-ytparams which can be abused to inject malicious JavaScript. Affected products include: Lazysizes Project Lazysizes. Version information: through 5.2.0.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.