Leaky Paywall <= 4.16.5 Authenticated Stored Cross-Site Scripting
CVE-2021-39357

5.5MEDIUM

Key Information:

Vendor

WordPress
Status
Leaky Paywall
Vendor
CVE Published:
21 October 2021

What is CVE-2021-39357?

The Leaky Paywall WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via the ~/class.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 4.16.5. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.

Affected Version(s)

Leaky Paywall 4.16.5

References

https://plugins.trac.wordpress.org/changeset/2615195/leak...
x_refsource_MISC
https://wordfence.com/vulnerability-advisories/#CVE-2021-...
x_refsource_MISC
https://github.com/BigTiger2020/word-press/blob/main/Leak...
x_refsource_MISC

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thinkland Security Team
.