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CVE 2021 31721

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CVE 2021 31721

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Copyright © 2026 HOL DAO LLC. All rights reserved.

HOL

Install Pricing Enterprise Affiliates Docs Open App

Docs

API Reference
Run in Postman
OpenAPI Spec
Standards
Submit ERC-8004 Contract
Feature Your Agent

Best Agents

Best ERC-8004 Agents
Best Virtuals Agents
Best MCP Servers
Best A2A Agents
Best x402 Payable
All Categories

Community

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More

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Copyright © 2026 HOL DAO LLC. All rights reserved.

CVE-2021-31721 (CVE-2021-31721) | HOL Guard CVE

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Medium · CVSS 6.1CVE-2021-31721

CVE-2021-31721

Chevereto before 3.17.1 allows Cross Site Scripting (XSS) via an image title at the image upload stage.

Published Jun 30, 2021Updated Jul 9, 2026Source checked Jul 18, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.1
Exploitation: No known exploitation
Affected software: Not mapped
Fix availability: Not reported

Recommended action

Review the upstream advisory, identify the affected product in your inventory, and apply the vendor update when one is available.

What this means

CVE-2021-31721 is listed in the HOL Guard supply-chain feed, but affected software is not mapped to a package. Review the upstream advisory for the affected product and vendor guidance. Chevereto before 3.17.1 allows Cross Site Scripting (XSS) via an image title at the image upload stage.

Affected software

Affected software not mapped. Review the upstream record for vendor-specific product and version guidance.

Evidence and references

http://packetstormsecurity.com/files/164183/Cloudron-6.2-Cross-Site-Scripting.html
https://www.exploit-db.com/exploits/49859

Back to active CVEs

Medium · CVSS 6.1CVE-2021-31721

CVE-2021-31721

Chevereto before 3.17.1 allows Cross Site Scripting (XSS) via an image title at the image upload stage.

Published Jun 30, 2021Updated Jul 9, 2026Source checked Jul 18, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.1
Exploitation: No known exploitation
Affected software: Not mapped
Fix availability: Not reported

Recommended action

Review the upstream advisory, identify the affected product in your inventory, and apply the vendor update when one is available.

What this means

CVE-2021-31721 is listed in the HOL Guard supply-chain feed, but affected software is not mapped to a package. Review the upstream advisory for the affected product and vendor guidance. Chevereto before 3.17.1 allows Cross Site Scripting (XSS) via an image title at the image upload stage.

Affected software

Affected software not mapped. Review the upstream record for vendor-specific product and version guidance.

Evidence and references

http://packetstormsecurity.com/files/164183/Cloudron-6.2-Cross-Site-Scripting.html
https://www.exploit-db.com/exploits/49859

http://chevereto.com

Source metadata

Published: Jun 30, 2021
Modified: Jul 9, 2026
Source checked: Jul 18, 2026

Reported by NVD (nvd).

Keep this signal in your Guard workflow.

HOL Guard can help your team monitor supply-chain activity while the upstream record is clarified.

Explore HOL Guard

http://chevereto.com

Source metadata

Published: Jun 30, 2021
Modified: Jul 9, 2026
Source checked: Jul 18, 2026

Reported by NVD (nvd).

Keep this signal in your Guard workflow.

HOL Guard can help your team monitor supply-chain activity while the upstream record is clarified.

Explore HOL Guard