XSS via the "Snapshot Test" feature in Classic Webcam plugin settings

Exploitation

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

CVSS

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

EPSS

• CVE-2024-28237: 0.44% estimated exploitation activity in the next 30 days; percentile 38.17 (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.

Impact OctoPrint versions up until and including 1.9.3 contain a vulnerability that allows malicious admins to configure or talk a victim with administrator rights into configuring a webcam snapshot URL which when tested through the "Test" button included in the web interface will execute JavaScript code in the victims browser when attempting to render the snapshot image. An attacker who successfully talked a victim with admin rights into performing a snapshot test with such a crafted URL could use this to retrieve or modify sensitive configuration settings, interrupt prints or otherwise interact with the OctoPrint instance in a malicious way. Patches The vulnerability will be patched in version 1.10.0. Workaround OctoPrint administrators are strongly advised to thoroughly vet who has admin access to their installation and what settings they modify based on instructions by strangers. PoC Below are the steps to reproduce the vulnerability: 1. Create a URL that responds with a…

Published by the source

18 Mar 2024, 20:29 UTC

Last modified by the source

10 Jun 2026, 17:14 UTC

Source last checked

26 Oct 2026, 13:30 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-x7mf-wrh9-r76c

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-x7mf-wrh9-r76c

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# Patch Next advisory brief: CVE-2024-28237

Advisory: XSS via the "Snapshot Test" feature in Classic Webcam plugin settings
IDs: CVE-2024-28237, GHSA-x7mf-wrh9-r76c
Record: https://patchnext.com/advisories/cve-2024-28237 (revision 2, source checked 26 Oct 2026, 13:30 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.0)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: octoprint 1.10.0rc3. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI octoprint: affected <= 1.9.3; fixed in 1.10.0rc3

## Suggested inspection (read-only)
- `python -m pip show octoprint`: prints the installed version. Run with the environment that serves production active.

## 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 octoprint.
- 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-x7mf-wrh9-r76c (OSV record GHSA-x7mf-wrh9-r76c lists affected ranges: PyPI octoprint >=0 <1.10.0rc3 (fixed))
- Verified: https://github.com/advisories/GHSA-x7mf-wrh9-r76c (GitHub-reviewed advisory GHSA-x7mf-wrh9-r76c lists affected ranges: PyPI octoprint >=0 <=1.9.3)

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