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GHSA-xvxq-g8hw-fx4g

MEDIUM

OctoPrint Vulnerable to Reflected XSS in Jinja2 Templates

Also known asCVE-2024-49377PYSEC-2024-201
Published
Nov 5, 2024
Updated
Jan 21, 2025
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk18th percentile-0.07%
0.00%0.28%0.56%0.83%0.1%0.3%Dec 25Apr 26Jun 26

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected
🐍octoprint

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

Impact

OctoPrint versions up until and including 1.10.2 are vulnerable to reflected XSS vulnerabilities through its Jinja2 template system, as this is not configured to enforce automatic escaping. This affects, among other places, the login dialog and the standalone application key confirmation dialog.

An attacker who successfully talked a victim into clicking on or through a malicious third party app successfully redirected a victim to a specially crafted link 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 above mentioned specific vulnerabilities of the login dialog and the standalone application key confirmation dialog will be patched in the bugfix release 1.10.3 by individual escaping of the detected locations. A global change throughout all of OctoPrint's templating system with the upcoming 1.11.0 release will handle this further, switching to globally enforced automatic escaping and thus reducing the attack surface in general.

The latter will also improve the security of third party plugins. During a transition period, third party plugins will be able to opt into the automatic escaping. With OctoPrint 1.13.0, automatic escaping will be switched over to be enforced even for third party plugins, unless they explicitly opt-out.

Credits

This vulnerability was discovered and responsibly disclosed to OctoPrint by Jacopo Tediosi.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIoctoprintall versions1.10.3

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for octoprint. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update octoprint to 1.10.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xvxq-g8hw-fx4g is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-xvxq-g8hw-fx4g is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-xvxq-g8hw-fx4g. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact OctoPrint versions up until and including 1.10.2 are vulnerable to reflected XSS vulnerabilities through its Jinja2 template system, as this is not configured to enforce automatic escaping. This affects, among other places, the login dialog and the standalone application key confirmation dialog. An attacker who successfully talked a victim into clicking on or through a malicious third party app successfully redirected a victim to a specially crafted link could use this to retrieve or modify sensitive configuration settings, interrupt prints or otherwise interact with the OctoPrin
O3 Security · Impact-Aware SCA

Is GHSA-xvxq-g8hw-fx4g in your dependencies?

O3 detects GHSA-xvxq-g8hw-fx4g across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.