HAXcms Has Stored XSS Vulnerability that May Lead to Account Takeover

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

8.0 · CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

EPSS

• CVE-2026-22704: 1.03% estimated exploitation activity in the next 30 days; percentile 63.66 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary Stored XSS Leading to Account Takeover Details The Exploit Chain: 1.Upload: The attacker uploads an .html file containing a JavaScript payload. 2.Execution: A logged-in administrator is tricked into visiting the URL of this uploaded file. 3.Token Refresh: The JavaScript payload makes a fetch request to the /system/api/refreshAccessToken endpoint. Because the administrator is logged in, their browser automatically attaches the haxcmsrefreshtoken cookie to this request. 4.JWT Theft: The server validates the refresh token and responds with a new, valid JWT access token in the JSON response. 5.Exfiltration: The JavaScript captures this new JWT from the response and sends it to an attacker-controlled server. 6.Account Takeover: The attacker now possesses a valid administrator JWT and can take full control of the application. Vulnerability recurrence: <img width="1198" height="756" alt="image" src="https://github.com/user-attachments/assets/7062d542-702e-4cbe-8493-da0f71e790c3" /…

Published by the source

13 Jan 2026, 15:07 UTC

Last modified by the source

3 Feb 2026, 03:01 UTC

Source last checked

26 Oct 2026, 12:41 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-3fm2-xfq7-7778

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-3fm2-xfq7-7778

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# Patch Next advisory brief: CVE-2026-22704

Advisory: HAXcms Has Stored XSS Vulnerability that May Lead to Account Takeover
IDs: CVE-2026-22704, GHSA-3fm2-xfq7-7778
Record: https://patchnext.com/advisories/cve-2026-22704 (revision 2, source checked 26 Oct 2026, 12:41 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.0)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @haxtheweb/haxcms-nodejs 25.0.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @haxtheweb/haxcms-nodejs: affected >= 11.0.6, < 25.0.0; fixed in 25.0.0

## Suggested inspection (read-only)
- `npm ls @haxtheweb/haxcms-nodejs --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on @haxtheweb/haxcms-nodejs.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-3fm2-xfq7-7778 (OSV record GHSA-3fm2-xfq7-7778 lists affected ranges: npm @haxtheweb/haxcms-nodejs >=11.0.6 <25.0.0 (fixed))
- Verified: https://github.com/advisories/GHSA-3fm2-xfq7-7778 (GitHub-reviewed advisory GHSA-3fm2-xfq7-7778 lists affected ranges: npm @haxtheweb/haxcms-nodejs >=11.0.6 <25.0.0)

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