CVE-2021-33507 : Zope Products.CMFCore before 2.5.1 and Products.PluggableAuthService before 2.6.

Zope Products.CMFCore before 2.5.1 and Products.PluggableAuthService before 2.6.2, as used in Plone through 5.2.4 and other products, allow Reflected XSS.

Published 2021-05-21 22:15:08

Updated 2021-05-27 21:36:47

Source MITRE

View at NVD, CVE.org

Vulnerability category: Cross site scripting (XSS)

Products affected by CVE-2021-33507

Zope » Zope
Versions before (<) 2.5.1
cpe:2.3:a:zope:zope:*:*:*:*:*:*:*:*
Matching versions
Plone » Plone
Versions from including (>=) 5.0 and up to, including, (<=) 5.2.4
cpe:2.3:a:plone:plone:*:*:*:*:*:*:*:*
Matching versions
Plone » Plone
Versions up to, including, (<=) 4.3.20
cpe:2.3:a:plone:plone:*:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2021-33507

Top countries where our scanners detected CVE-2021-33507

Top open port discovered on systems with this issue 22

IPs affected by CVE-2021-33507 3

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2021-33507!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2021-33507

EPSS FAQ

0.07%

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

~ 31 %

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

CVSS scores for CVE-2021-33507

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.3	MEDIUM	AV:N/AC:M/Au:N/C:N/I:P/A:N	8.6	2.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
6.1	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	2.8	2.7	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Changed Confidentiality: Low Integrity: Low Availability: None

CWE ids for CVE-2021-33507

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-33507

https://plone.org/security/hotfix/20210518/reflected-xss-in-various-spots

Reflected XSS in various spots — Plone: Enterprise Level CMS - Free and OpenSource - Community Driven - Secure
Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/05/22/1

oss-security - Re: Plone security hotfix 20210518
Mailing List;Third Party Advisory

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