What is the CVSS score of CVE-2021-3258?

CVE-2021-3258 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: 1.6%.

Is there a public PoC exploit available for CVE-2021-3258?

Yes, a public proof-of-concept exploit is available for CVE-2021-3258. Prioritise patching immediately. EPSS: 1.6%.

Is there a patch available for CVE-2021-3258?

Yes, a patch is available for CVE-2021-3258. Update the affected software to the latest version immediately.

Q2A Ultimate Seo CVE-2021-3258

MEDIUM

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

2021-02-05 cve@mitre.org

RCE XSS Q2A Ultimate Seo

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

Feb 05, 2021 - 16:15 nvd

MEDIUM 5.4

DescriptionNVD

Question2Answer Q2A Ultimate SEO Version 1.3 is affected by cross-site scripting (XSS), which may lead to arbitrary remote code execution.

AnalysisAI

Question2Answer Q2A Ultimate SEO Version 1.3 is affected by cross-site scripting (XSS), which may lead to arbitrary remote code execution. 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. Question2Answer Q2A Ultimate SEO Version 1.3 is affected by cross-site scripting (XSS), which may lead to arbitrary remote code execution. Affected products include: Qa-Themes Q2A Ultimate Seo. Version information: Version 1.3.

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.