CVE-2026-5790
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedStored Cross-Site Scripting (XSS) in Stel Order v3.25.1 and earlier, located at the ‘/app/FrontController’ endpoint via the ‘legalName’ and ‘employeeID’ parameters. The lack of proper input sanitization allows an attacker to inject malicious code that is persistently stored in the database. When other users or administrators access the affected sections, the code executes in their browsers, enabling the theft of session cookies and account hijacking.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceStored Cross-Site Scripting (XSS) vulnerability in Stel Order v3.25.1 and earlier allows injection of malicious scripts through the 'legalName' and 'employeeID' parameters at the /app/FrontController endpoint. The injected code persists in the database and executes in browsers of users accessing affected sections, enabling session cookie theft and account hijacking.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- Authentication
- X
- User interaction
- A
- Scope
- X
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Stel Order versionLocate the installed Stel Order application and determine its version number (typically found in application metadata, about page, or version file). Compare your version against v3.25.1 - any version at or below 3.25.1 is within the affected range.Affected if Installed version is v3.25.1 or earlier
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Confirm endpoint accessibilityVerify that the /app/FrontController endpoint is accessible in your environment. This endpoint handles the 'legalName' and 'employeeID' input parameters.Affected if The /app/FrontController endpoint is active and accepts user input
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Check database for injected scriptsInspect the application database for stored XSS payloads in fields corresponding to 'legalName' and 'employeeID'. Query these fields for unexpected HTML tags, script elements, or JavaScript event handlers.Affected if Malicious script tags or event handlers are found in the legalName or employeeID database fields
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Review application logsExamine application and web server logs for suspicious requests to /app/FrontController containing XSS payloads in the legalName or employeeID parameters.Affected if Logs show XSS payloads submitted to these parameters
You are affected if you run Stel Order v3.25.1 or earlier, use the /app/FrontController endpoint, and malicious scripts exist in the legalName or employeeID fields in your database.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement proper input sanitization and output encoding for the 'legalName' and 'employeeID' parameters at /app/FrontController. All user-supplied data must be validated against an allowlist and properly escaped before being rendered in HTML contexts.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-5790 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-5790 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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