# CVE-2021-29349: Cross-site request forgery in n/a

> A CSRF vulnerability in Mahara allows attackers to delete all inbox messages from a user's mailbox via a crafted POST request.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 31 Mar 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-qmp2-78hm-526w

## What is CVE-2021-29349?

CVE-2021-29349 is a medium-severity vulnerability in Mahara Mahara, published on 31 Mar 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Mahara 20.10 is affected by Cross Site Request Forgery (CSRF) that allows a remote attacker to remove inbox-mail on the server. The application fails to validate the CSRF token for a POST request. An attacker can craft a module/multirecipientnotification/inbox.php pieform_delete_all_notifications request, which leads to removing all messages from a mailbox.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2021-29349?

It affects 1 product.


Products: Mahara Mahara.

## How do I fix CVE-2021-29349?

No fix has been published for CVE-2021-29349 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-29349 being exploited?

There is no known exploitation of CVE-2021-29349 in the wild and no public exploit code.

Public exploit code:

- CVE-2021-29349 CSRF to remove all messages in Mahara 20.10 (github_poc): https://github.com/Vulnmachines/CVE-2021-29349

## Other vulnerabilities in Mahara Mahara

- [CVE-2022-45134](https://insights.sbomify.com/CVE-2022-45134/): Deserialization in n/a (critical 9.8)
- [CVE-2022-44544](https://insights.sbomify.com/CVE-2022-44544/): Command injection in n/a (critical 9.8)
- [CVE-2021-40849](https://insights.sbomify.com/CVE-2021-40849/): Auth bypass in n/a (critical 9.8)
- [CVE-2017-1000152](https://insights.sbomify.com/CVE-2017-1000152/): Auth bypass in n/a (critical 9.8)
- [CVE-2017-1000153](https://insights.sbomify.com/CVE-2017-1000153/): Auth bypass in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-29349 and fix it if it is affected.

What it is: CVE-2021-29349 is a medium-severity vulnerability in Mahara Mahara, published on 31 Mar 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-29349 in the wild and no public exploit code.

Affected product: Mahara Mahara. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-29349/ (Markdown: https://insights.sbomify.com/CVE-2021-29349/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-29349
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-29349
- OSV: https://osv.dev/vulnerability/CVE-2021-29349

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-29349/
Summaries are generated and may contain mistakes; the official description above is the record.