OctoPrint vulnerable to XSS in Action Commands Notification and Prompt

Exploitation

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

CVSS 4.0

4.6 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:N · score source

EPSS

• CVE-2025-64187: 0.17% estimated exploitation activity in the next 30 days; percentile 6.29 (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 to and including 1.11.3 are affected by a vulnerability that allows injection of arbitrary HTML and JavaScript into Action Command notification and prompt popups generated by the printer. An attacker who successfully convinces a victim to print a specially crafted file could exploit this issue to disrupt ongoing prints, extract information (including sensitive configuration settings, if the targeted user has the necessary permissions for that), or perform other actions on behalf of the targeted user within the OctoPrint instance. Patches The vulnerability will be patched in version 1.11.4. Workaround OctoPrint administrators can mitigate the risk by disabling popups: - for Action Command notifications, uncheck OctoPrint Settings - Printer Notifications - Enable popups - for Action Command prompts, set OctoPrint Settings - Printer Dialogs - Enable support - Never It is also strongly recommended to ensure that files being printed originate from trusted…

Published by the source

4 Nov 2025, 15:42 UTC

Last modified by the source

7 Jul 2026, 17:57 UTC

Source last checked

26 Oct 2026, 13:35 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-crvm-xjhm-9h29

2. Revision 2 · amended · 24 Oct 2026

   Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-crvm-xjhm-9h29

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# Patch Next advisory brief: CVE-2025-64187

Advisory: OctoPrint vulnerable to XSS in Action Commands Notification and Prompt
IDs: CVE-2025-64187, GHSA-crvm-xjhm-9h29
Record: https://patchnext.com/advisories/cve-2025-64187 (revision 3, source checked 26 Oct 2026, 13:35 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.6)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: octoprint 1.11.4. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI octoprint: affected <= 1.11.3; fixed in 1.11.4

## 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-crvm-xjhm-9h29 (OSV record GHSA-crvm-xjhm-9h29 lists affected ranges: PyPI octoprint >=0 <1.11.4 (fixed))
- Verified: https://github.com/advisories/GHSA-crvm-xjhm-9h29 (GitHub-reviewed advisory GHSA-crvm-xjhm-9h29 lists affected ranges: PyPI octoprint >=0 <=1.11.3)

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