CVE-2020-35933

A Reflected Authenticated Cross-Site Scripting (XSS) vulnerability in the Newsletter plugin before 6.8.2 for WordPress allows remote attackers to trick a victim into submitting a tnpc_render AJAX request containing either JavaScript in an options parameter, or a base64-encoded JSON string containing JavaScript in the encoded_options parameter.

CVSS v3 6.5 MEDIUM
CVSS v2.0 3.5 LOW

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 3.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope CHANGED

3.5^/10

CVSS v2.0 : LOW

Vector : AV:N/AC:M/Au:S/C:N/I:P/A:N

Exploitability : 6.8 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://www.wordfence.com/blog/2020/08/newsletter-plugin-vulnerabilities-affect-over-300000-sites/	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:thenewsletterplugin:newsletter:*:*:*:*:*:wordpress:*:*

History

18 May 2023, 15:42

Type	Values Removed	Values Added
First Time		Thenewsletterplugin newsletter Thenewsletterplugin
CPE	cpe:2.3:a:tribulant:newsletter::::::wordpress::*	cpe:2.3:a:thenewsletterplugin:newsletter::::::wordpress::*

11 Jan 2021, 21:45

Type	Values Removed	Values Added
CWE		CWE-79
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 3.5 v3 : 6.5
References	~~(MISC) https://www.wordfence.com/blog/2020/08/newsletter-plugin-vulnerabilities-affect-over-300000-sites/ -~~	(MISC) https://www.wordfence.com/blog/2020/08/newsletter-plugin-vulnerabilities-affect-over-300000-sites/ - Exploit, Third Party Advisory
CPE		cpe:2.3:a:tribulant:newsletter::::::wordpress::*

01 Jan 2021, 02:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-01-01 02:15

Updated : 2023-12-10 13:41

NVD link : CVE-2020-35933

Mitre link : CVE-2020-35933

CVE.ORG link : CVE-2020-35933

JSON object : View

Products Affected

thenewsletterplugin

newsletter

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

{"id": "CVE-2020-35933", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 3.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "LOW", "obtainAllPrivilege": false, "exploitabilityScore": 6.8, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 3.7, "exploitabilityScore": 2.3}, {"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 3.7, "exploitabilityScore": 2.3}]}, "published": "2021-01-01T02:15:13.237", "references": [{"url": "https://www.wordfence.com/blog/2020/08/newsletter-plugin-vulnerabilities-affect-over-300000-sites/", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "A Reflected Authenticated Cross-Site Scripting (XSS) vulnerability in the Newsletter plugin before 6.8.2 for WordPress allows remote attackers to trick a victim into submitting a tnpc_render AJAX request containing either JavaScript in an options parameter, or a base64-encoded JSON string containing JavaScript in the encoded_options parameter."}, {"lang": "es", "value": "Una vulnerabilidad de tipo Cross-Site Scripting (XSS) Autenticado Reflejado en el plugin Newsletter versiones anteriores a 6.8.2 para WordPress permite a atacantes remotos enga\u00f1ar a una v\u00edctima para enviar una petici\u00f3n AJAX de tnpc_render que contenga JavaScript en un par\u00e1metro de opciones o una cadena JSON codificada en base64 que contenga JavaScript en el par\u00e1metro encoded_options."}], "lastModified": "2023-05-18T15:42:47.343", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:thenewsletterplugin:newsletter:*:*:*:*:*:wordpress:*:*", "vulnerable": true, "matchCriteriaId": "4D40EFC9-F2A3-43FB-9D55-8E01F71B2C2C", "versionEndExcluding": "6.8.2"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}