# CVE-2021-27582: Autobinding vulnerability in MITREid Connect

> Attackers can manipulate OAuth authorization requests via mass assignment, potentially bypassing security controls or escalating privileges in MITREid Connect.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Feb 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-8p36-q63g-68qh

## What is CVE-2021-27582?

CVE-2021-27582 is a critical vulnerability in n/a, published on 23 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

org/mitre/oauth2/web/OAuthConfirmationController.java in the OpenID Connect server implementation for MITREid Connect through 1.3.3 contains a Mass Assignment (aka Autobinding) vulnerability. This arises due to unsafe usage of the @ModelAttribute annotation during the OAuth authorization flow, in which HTTP request parameters affect an authorizationRequest.

Weakness: CWE-1321 (Improperly Controlled Modification of Object Prototype Attributes)

## Which versions are affected by CVE-2021-27582?

2 open source packages ship an affected version, including org.mitre:openid-connect-parent. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.mitre:openid-connect-parent` | Maven | All versions to 1.3.3 | None |
| `org.mitre:openid-connect-parent` | Maven | All versions to 1.3.3 | None |

Products: Mitreid Connect.

## How do I fix CVE-2021-27582?

No fix has been published for CVE-2021-27582 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-27582 being exploited?

There is no known exploitation of CVE-2021-27582 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-26715](https://insights.sbomify.com/CVE-2021-26715/): Server Side Request Forgery (SSRF) in org.mitre:openid-connect-server (critical 9.1)
- [CVE-2020-5497](https://insights.sbomify.com/CVE-2020-5497/): XSS in MITREid Connect (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-27582 and fix it if it is affected.

What it is: CVE-2021-27582 is a critical vulnerability in n/a, published on 23 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-27582 in the wild and no public exploit code.

Affected packages and fixed versions:
- org.mitre:openid-connect-parent (Maven): affected all versions up to 1.3.3; no fix listed
- org.mitre:openid-connect-parent (Maven): affected all versions up to 1.3.3; no fix listed

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-2021-27582/ (Markdown: https://insights.sbomify.com/CVE-2021-27582/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-27582
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-27582
- OSV: https://osv.dev/vulnerability/CVE-2021-27582

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-27582/
Summaries are generated and may contain mistakes; the official description above is the record.