Persistent Cross-Site Scripting Vulnerability in Rocket LMS by Rocket Software
CVE-2021-47907

5.1MEDIUM

Key Information:

Vendor

Rocketsoft

Status
Rocket Lms
Vendor
CVE Published:
10 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47907?

Rocket LMS version 1.1 is susceptible to a persistent cross-site scripting (XSS) vulnerability found in its support ticket module. This flaw permits authenticated users to inject malicious HTML/JavaScript payloads through the title parameter of the support ticket. Such payloads can be triggered when other users access the message history, potentially leading to session hijacking and phishing attacks. This vulnerability underscores the importance of sanitizing user input and the need for robust security practices in web applications.

Affected Version(s)

Rocket LMS 1.1

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-2021-47907 - Proof of Concept

References

https://www.exploit-db.com/exploits/50677
exploit
https://lms.rocket-soft.org/
product
https://www.vulncheck.com/advisories/rocket-lms-persisten...
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

Vulnerability-Lab
.