PlanSo Forms <= 2.6.4 - Authenticated (Admin+) Stored Cross-Site Scripting

2021-09-15 00:00

Felipe Restrepo Rodriguez (pfelilpe)

Strategic Overview

Status

Unpatched

Affected PluginPlanSo Forms

Affected Version<= 2.6.4

CVSS5.5Medium

CVECVE-2021-24516

View all PlanSo Forms vulnerabilities

Vulnerability Overview

The PlanSo Forms WordPress plugin through 2.6.4 does not escape the title of its Form before outputting it in attributes, allowing high privilege users such as admin to set XSS payload in it, even when the unfiltered_html is disallowed, leading to an Authenticated Stored Cross-Site Scripting issue.

Technical Analysis

REMEDIATION: No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement. --- IDENTIFIER: 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.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24516 https://www.wordfence.com/threat-intel/vulnerabilities/id/51e4f7ac-efc5-492c-b7a4-eea6d5f69e0d

CVSS Vector

5.5

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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