# CVE-2021-26070: Auth bypass in Jira Data Center

> Remote attackers can bypass authentication to access protected resources in Atlassian Jira Server and Data Center.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/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:** 22 Mar 2021
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-3q2j-hfh6-wm75

## What is CVE-2021-26070?

CVE-2021-26070 is a high-severity authentication bypass vulnerability in Atlassian Jira, published on 22 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to evade behind-the-firewall protection of app-linked resources via a Broken Authentication vulnerability in the `makeRequest` gadget resource. The affected versions are before version 8.13.3, and from version 8.14.0 before 8.14.1.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2021-26070?

It affects 3 products.


Products: Atlassian Data Center, Atlassian Jira, Atlassian Jira Server.

## How do I fix CVE-2021-26070?

No fix has been published for CVE-2021-26070 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-26070 being exploited?

There is no known exploitation of CVE-2021-26070 in the wild and no public exploit code.

## Other vulnerabilities in Atlassian Jira

- [CVE-2017-18113](https://insights.sbomify.com/CVE-2017-18113/): Code injection in Jira Data Center (high 8.8)
- [CVE-2021-41312](https://insights.sbomify.com/CVE-2021-41312/): Auth bypass in Jira Data Center (high 7.5)
- [CVE-2021-39123](https://insights.sbomify.com/CVE-2021-39123/): Denial of service in Jira Data Center (high 7.5)
- [CVE-2021-39113](https://insights.sbomify.com/CVE-2021-39113/): Missing authorization in Jira Data Center (high 7.5)
- [CVE-2021-43947](https://insights.sbomify.com/CVE-2021-43947/): Code injection in Jira Data Center (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-26070 and fix it if it is affected.

What it is: CVE-2021-26070 is a high-severity authentication bypass vulnerability in Atlassian Jira, published on 22 Mar 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-2021-26070 in the wild and no public exploit code.

Affected product: Atlassian Jira. 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-2021-26070/ (Markdown: https://insights.sbomify.com/CVE-2021-26070/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-26070
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-26070
- OSV: https://osv.dev/vulnerability/CVE-2021-26070

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-26070/
Summaries are generated and may contain mistakes; the official description above is the record.