Persistent Cross-Site Scripting in Anote Product by AnotherNote
CVE-2021-47963

5.1MEDIUM

Key Information:

Vendor

Anothernote

Status
Anote
Vendor
CVE Published:
15 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47963?

Anote 1.0 suffers from a persistent cross-site scripting vulnerability that enables attackers to inject malicious JavaScript payloads into markdown files stored within the application. When these files are accessed, the malicious code can execute arbitrary commands on the victim’s system, leading to remote code execution and potential unauthorized access to sensitive data. This vulnerability poses a significant risk to users of the application, highlighting the importance of secure coding practices and regular security assessments.

Affected Version(s)

Anote 1.0

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-2021-47963 - Proof of Concept

References

https://www.exploit-db.com/exploits/49836
exploit
https://github.com/AnotherNote/anote
product
https://www.vulncheck.com/advisories/anote-persistent-cro...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

TaurusOmar
.