How should we interpret CVSS severity scores?

CVSS estimates technical severity, but it does not automatically equal business risk. Prioritize using context like internet exposure, asset criticality, known exploitation, and whether compensating controls exist. A Medium CVSS on an exposed production system can be more urgent than a Critical on an isolated non-production host.

Vulnerability Database

Q: What is a Vulnerability (CVE) and why does it matter?

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

Q: What's the difference between a vulnerability, an exploit, and a zero-day?

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. Risk increases sharply when exploitation becomes reliable or widespread.

Q: Why do vulnerabilities keep reappearing in our environment?

Recurring findings usually come from incomplete asset discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host.

Q: How do we prioritize remediation without burning out the team?

Use a repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress so remediation is steady, not reactive.

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328,409

Total vulnerabilities in the database

Saltcorn's Reflected XSS and Command Injection vulnerabilities can be chained for 1-click-RCE

Summary

There is a reflected XSS vulnerability in the GET /admin/edit-codepage/:name route through the name parameter. This can be used to hijack the session of an admin if they click a specially crafted link.
Additionally, there is a Command Injection vulnerability in GET /admin/backup. The admin can inject a shell command in the backup password which is inserted in the command used to create the backup zip.

Both vulnerabilities can be chained to craft a malicious link which will execute an arbitrary shell command on the server if it is clicked by a saltcorn admin with an active session. I believe iframes could also be used to exploit this silently when the admin visits an attacker-controlled web page (though I have not tested that).

Details

The XSS vulnerability is here: https://github.com/saltcorn/saltcorn/blob/020893c0001678fd5ebd2c088ba68b395de1aabc/packages/server/routes/admin.js#L4886-L4887 Specifically, the name parameter is inserted into the pages breadcrumbs without sanitization.
The Command Injection happens here: https://github.com/saltcorn/saltcorn/blob/020893c0001678fd5ebd2c088ba68b395de1aabc/packages/saltcorn-admin-models/models/backup.ts#L381-L382

PoC

A minimal PoC for the XSS can be as simple as: http://localhost:3000/admin/edit-codepage/%3Cimg%20src%3Dx%20onerror%3Dalert%281%29%3E%0A (assuming saltcorn running at localhost:3000 and the user having an active admin session)
For the Command Injection, visit the backup section of saltcorn, set an admin password like ";$(whoami);" (including the quotation marks) and then click "Download a backup" in the "Manual backup" section. This should display an error page saying that /bin/sh could not find the binary named "root" or "saltcorn", depending on the user.

An example of an exploit that chains both vulnerabilities and generates the aforementioned malicious link: exploit.zip

Affected Versions

Edit: The following Docker containers from docker hub were tested: 1.4.1, 1.4.0, 1.3.1, 1.3.0, 1.2.0, 1.1.2, 1.1.1, 1.0.0 The Command Injection is applicable to versions >= 1.3.0. The XSS is applicable to versions >= 1.1.1

Published: Jan 26, 2026
Updated: Mar 1, 2026
GHSA: GHSA-cr3w-cw5w-h3fj
Severity: Critical
Exploit:

CVSS v3:

Severity: Unknown
Score:
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CWEs:

OWASP TOP 10:

Affected Software
References

Software	From	Fixed in
@saltcorn / server	1.1.1	1.5.0-beta.19

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Frequently Asked Questions

What is a Vulnerability (CVE) and why does it matter?

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.