WP HTML Author Bio <= 1.2.0 - Author+ Stored Cross-Site Scripting
CVE-2021-24545

5.4MEDIUM

Key Information:

Vendor

Wordpress
Status
WP Html Author Bio
Vendor
CVE Published:
11 October 2021

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 13%

What is CVE-2021-24545?

The WP HTML Author Bio WordPress plugin through 1.2.0 does not sanitise the HTML allowed in the Bio of users, allowing them to use malicious JavaScript code, which will be executed when anyone visit a post in the frontend made by such user. As a result, user with a role as low as author could perform Cross-Site Scripting attacks against users, which could potentially lead to privilege escalation when an admin view the related post/s.

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Affected Version(s)

WP HTML Author Bio 1.2.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-24545
Created by dnr6419

References

https://wpscan.com/vulnerability/64267134-9d8c-4e0c-b24f-...
x_refsource_MISC

EPSS Score

13% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Veshraj Ghimire
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