What is CVE-2025-64187?

CVE-2025-64187 is a medium-severity vulnerability in Octoprint, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 4.4/10. Published 2025-11-07.

How severe is CVE-2025-64187?

Medium severity. CVSS v3 base score is 4.4 out of 10.

XSS in Octoprint

CVE-2025-64187

OctoPrint provides a web interface for controlling consumer 3D printers. Versions 1.11.3 and below are affected by a vulnerability that allows injection of arbitrary HTML and JavaScript into Action Command notifications and prompts 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. This issue is fixed in version 1.11.4.

EPSS: 0.002 (4.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Octoprint — versions < 1.11.4

Weakness classification (CWE)

CWE-80 — Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2025-64187?: CVE-2025-64187 is a medium-severity vulnerability in Octoprint, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 4.4/10. Published 2025-11-07.
How severe is CVE-2025-64187?: Medium severity. CVSS v3 base score is 4.4 out of 10.