CVE-2021-47907
📛 CVE Title
(no title)
Description
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.
Overview
- State
- —
- Assigner (CNA)
- —
- CVSS severity
- medium
- CVSS score
- 6.4 / 10
- CVSS vector
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N- Effective score
- 6.4 / 10 MEDIUM source: CNA overview
- CWE(s)
- —
- Reserved
- —
- Published
- —
- Last updated
- —
- Source
- https://www.tenable.com/cve/CVE-2021-47907
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-05-10 13:16:27 UTC
- NVD last modified
- 2026-05-12 14:24:15 UTC
- NVD CVSS v3.1
- 6.4 / 10 MEDIUM source: disclosure@vulncheck.com
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N- Exploitability subscore
- 3.1 / 10
- Impact subscore
- 2.7 / 10
- EPSS score
- 0.0003 (probability of exploitation in next 30 days)
- EPSS percentile
- 9.57% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24
NVD-assigned CWE(s):
CWE-79
(differs from the CNA list above)
NVD / KEV / EPSS data refreshed 2026-05-24 23:58 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2021-34781 - Assigner
- VulnCheck
- Published
- May 10, 2026, 12:43:43 PM
- Updated
- May 24, 2026, 1:37:04 AM
- EUVD base score (CVSS 4.0)
-
5.1 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N - EUVD-reported EPSS
- 0.0300
- Vendors
- RocketSoft
- Products
-
Rocket LMS (1.1)
ENISA description: 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.
Vendor references (0)
References embedded in the original CVE record by the assigning CNA.
None in the CVE record.
Web references (6)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- https://lms.rocket-soft.org/ tenable:lms.rocket-soft.org
- https://nvd.nist.gov/vuln/detail/CVE-2021-47907 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2021-47907 tenable:www.cve.org
- https://www.exploit-db.com/exploits/50677 tenable:www.exploit-db.com
- https://www.first.org/epss/ tenable:www.first.org
- https://www.vulncheck.com/advisories/rocket-lms-persistent-cross-site-scripting-via-support-tickets tenable:www.vulncheck.com
NVD-tagged references (3)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://lms.rocket-soft.org/ disclosure@vulncheck.com
- https://www.exploit-db.com/exploits/50677 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/rocket-lms-persistent-cross-site-scripting-via-support-tickets disclosure@vulncheck.com
Remediations (10)
-
web:federalnewsnetwork.com
CISA this year has already started accelerating the deadlines for agencies to patch software bugs posted to the Known Exploited Vulnerabilities (KEV) catalog.
2026-05-26 03:06 UTC -
web:msrc.microsoft.com
The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.
2026-05-26 03:06 UTC -
web:nvd.nist.gov
Vulnerabilities All vulnerabilities in the NVD have been assigned a CVE identifier and thus, abide by the definition below. CVE defines a vulnerability as: "A weakness in the computational logic (e.g., code) found in software and hardware components that, when exploited, results in a negative impact to confidentiality, integrity, or availability. Mitigation of the vulnerabilities in this ...
2026-05-26 03:06 UTC -
web:petri.com
How to Fix Issues Caused by Windows Cumulative Updates using Known Issue Rollback (Image Credit: Microsoft) KIR works at the code level.
2026-05-26 03:06 UTC -
web:windowsforum.com
Repair Windows Update Components with DISM + SFC (Win10/11) to Fix Update Errors Difficulty: Intermediate | Time Required: 20 minutes Windows Update errors often come down to corrupted system files or a damaged component store (the Windows image that updates rely on).
2026-05-26 03:06 UTC -
web:www.bugcrowd.com
Vulnerability mitigation is typically considered a temporary or interim solution. While mitigation measures can reduce the immediate risk associated with vulnerabilities, they may not provide a permanent fix . Organizations should aim to prioritize and plan for complete vulnerability remediation whenever feasible and allocate resources accordingly.
2026-05-26 03:06 UTC -
web:www.howtogeek.com
In this case, use your PC's built-in Windows Update troubleshooter to automatically find and fix issues with your updates. Only a little interaction is required from your end. To run that tool, go to Settings > Update & Security > Troubleshoot > Additional Troubleshooters > Windows Update and click "Run the Troubleshooter".
2026-05-26 03:06 UTC -
web:www.oracle.com
This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.
2026-05-26 03:06 UTC -
web:www.secure.com
Learn the difference between vulnerability remediation and mitigation , and how a risk-based strategy can strengthen your security posture.
2026-05-26 03:06 UTC -
web:www.xda-developers.com
Windows 11's second emergency patch of the month fixes a nasty Outlook issue You no longer need to deploy your own fixes A few days ago, we caught wind that Outlook was really struggling on ...
2026-05-26 03:06 UTC
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