What is the CVSS score of CVE-2021-24126?

CVE-2021-24126 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: 0.7%.

Is there a public PoC exploit available for CVE-2021-24126?

Yes, a public proof-of-concept exploit is available for CVE-2021-24126. Prioritise patching immediately. EPSS: 0.7%.

Envira Gallery CVE-2021-24126

MEDIUM

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

2021-03-18 contact@wpscan.com

Privilege Escalation WordPress XSS Envira Gallery

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

Mar 18, 2021 - 15:15 nvd

MEDIUM 5.4

DescriptionNVD

Unvalidated input and lack of output encoding in the Envira Gallery Lite WordPress plugin, versions before 1.8.3.3, did not properly sanitise the images metadata (namely title) before outputting them in the generated gallery, which could lead to privilege escalation.

AnalysisAI

Unvalidated input and lack of output encoding in the Envira Gallery Lite WordPress plugin, versions before 1.8.3.3, did not properly sanitise the images metadata (namely title) before outputting them. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch 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. Unvalidated input and lack of output encoding in the Envira Gallery Lite WordPress plugin, versions before 1.8.3.3, did not properly sanitise the images metadata (namely title) before outputting them in the generated gallery, which could lead to privilege escalation. Affected products include: Enviragallery Envira Gallery. Version information: before 1.8.3.3.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.