CVE-2021-47963
📛 CVE Title
(no title)
Description
Anote 1.0 contains a persistent cross-site scripting vulnerability that allows attackers to execute arbitrary code by injecting malicious payloads into markdown files stored within the application. Attackers can craft malicious markdown files with embedded JavaScript that executes system commands when opened, enabling remote code execution on the victim's computer.
Description (MITRE) cveawg.mitre.org
Pulled from cveawg.mitre.org/api/cve/CVE-2021-47963 on 2026-07-10. Shown when MITRE's text differs from the cvelistV5 mirror.
Anote 1.0 contains a persistent cross-site scripting vulnerability that allows attackers to execute arbitrary code by injecting malicious payloads into markdown files stored within the application. Attackers can craft malicious markdown files with embedded JavaScript that executes system commands when opened, enabling remote code execution on the victim's computer.
Overview
- State
- —
- Assigner (CNA)
- —
- CVSS severity
- high
- CVSS score
- 7.2 / 10
- CVSS vector
AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N- Effective score
- 7.2 / 10 HIGH source: CNA overview
- CWE(s)
- —
- Reserved
- —
- Published
- —
- Last updated
- —
- Source
- https://www.tenable.com/cve/CVE-2021-47963
- Linked Threat
- CVE-2021-47963 — CVE-2021-47963
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
- 2026-05-15 19:16:55 UTC
- NVD last modified
- 2026-05-18 17:32:04 UTC
- NVD CVSS v3.1
- 7.2 / 10 HIGH source: disclosure@vulncheck.com
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 2.7 / 10
- EPSS score
- 0.0003 (probability of exploitation in next 30 days)
- EPSS percentile
- 7.95% 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 2026-05-25 00:09 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-2021-34816 - Assigner
- VulnCheck
- Published
- May 15, 2026, 6:36:29 PM
- Updated
- May 25, 2026, 11:41:17 PM
- 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
- AnotherNote
- Products
-
Anote (1.0)
- Aliases
-
GHSA-m43r-r9f5-m97p
ENISA description: Anote 1.0 contains a persistent cross-site scripting vulnerability that allows attackers to execute arbitrary code by injecting malicious payloads into markdown files stored within the application. Attackers can craft malicious markdown files with embedded JavaScript that executes system commands when opened, enabling remote code execution on the victim's computer.
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://github.com/AnotherNote/anote tenable:github.com
- https://nvd.nist.gov/vuln/detail/CVE-2021-47963 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2021-47963 tenable:www.cve.org
- https://www.exploit-db.com/exploits/49836 tenable:www.exploit-db.com
- https://www.first.org/epss/ tenable:www.first.org
- https://www.vulncheck.com/advisories/anote-persistent-cross-site-scripting-remote-code-execution 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://github.com/AnotherNote/anote disclosure@vulncheck.com
- https://www.exploit-db.com/exploits/49836 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/anote-persistent-cross-site-scripting-remote-code-execution disclosure@vulncheck.com
Remediations (10)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:gemini.google.com
Meet Gemini, Google's AI assistant. Get help with writing, planning, brainstorming, and more. Experience the power of generative AI.
2026-05-26 02:55 UTC -
web:learn.microsoft.com
Use the DISM tool to fix problems that prevent Windows Update from installing successfully.
2026-05-26 02:55 UTC -
web:nvd.nist.gov
The NVD is the U.S. government repository of standards based vulnerability management data represented using the Security Content Automation Protocol (SCAP). This data enables automation of vulnerability management, security measurement, and compliance. The NVD includes databases of security checklist references, security-related software flaws, product names, and impact metrics. For ...
2026-05-26 02:55 UTC -
web:www.bastazo.com
In the field of vulnerability management, remediation , workaround, and mitigation are three common terms used to describe methods of addressing a vulnerability. They are sometimes used interchangeably, but their meanings can vary slightly across different vendors and organizations.
2026-05-26 02:55 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 02:55 UTC -
web:www.cisa.gov
If vulnerabilities cannot be remediated within the recommended timeframes, develop a remediation plan for action and coordination across the organization. The remediation plan should include: Vulnerability remediation constraints Interim mitigation actions to overcome constraints Final actions required to remediate vulnerability
2026-05-26 02:55 UTC -
web:www.cve.org
At cve .org, we provide the authoritative reference method for publicly known information-security vulnerabilities and exposures
2026-05-26 02:55 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 02:55 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 02:55 UTC -
web:www.virustotal.com
VirusTotal is a platform for scanning files and URLs for viruses, malware, and other threats using multiple antivirus engines.
2026-05-26 02:55 UTC
AI Forensic Analysis
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