XSS in Rocketsoft Rocket Lms
CVE-2021-47907
Rocket LMS 1.1 contains a persistent cross-site scripting vulnerability in the support ticket module that allows authenticated users to inject malicious script code through the title parameter. Attackers can submit support tickets with embedded HTML/JavaScript payloads that execute in the browsers of other users viewing the message history, enabling session hijacking and phishing attacks.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (13.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Rocketsoft Rocket Lms — versions 1.1
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/50677 (exploit)
- lms.rocket-soft.org/ (product)
- www.vulncheck.com/advisories/rocket-lms-persistent-cross-site-scripting-via-sup… (third-party-advisory)
Frequently asked questions
- What is CVE-2021-47907?
- CVE-2021-47907 is a medium-severity vulnerability in Rocketsoft Rocket Lms, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-05-10.
- How severe is CVE-2021-47907?
- Medium severity. CVSS v3 base score is 6.4 out of 10.