CVE-2021-47843

MEDIUM
2026-01-15 [email protected]
5.4
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Feb 05, 2026 - 19:20 vuln.today
Public exploit code
CVE Published
Jan 15, 2026 - 16:16 nvd
MEDIUM 5.4

Description

Tagstoo 2.0.1 contains a stored cross-site scripting vulnerability that allows attackers to inject malicious payloads through files or custom tags. Attackers can execute arbitrary JavaScript code to spawn system processes, access files, and perform remote code execution on the victim's computer.

Analysis

Tagstoo 2.0.1 contains a stored cross-site scripting vulnerability that allows attackers to inject malicious payloads through files or custom tags. Attackers can execute arbitrary JavaScript code to spawn system processes, access files, and perform remote code execution on the victim's computer. [CVSS 5.4 MEDIUM]

Technical Context

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Tagstoo. Tagstoo 2.0.1 contains a stored cross-site scripting vulnerability that allows attackers to inject malicious payloads through files or custom tags. Attackers can execute arbitrary JavaScript code to spawn system processes, access files, and perform remote code execution on the victim's computer.

Affected Products

Vendor: Pabloandumundu. Product: Tagstoo. Versions: up to 2.0.1.

Remediation

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.

Priority Score

47
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +27
POC: +20

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CVE-2021-47843 vulnerability details – vuln.today

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