# CVE-2020-29445: Server-side request forgery in Confluence Server

> Attackers can identify internal hosts and ports via blind server-side request forgery in Team Calendars parameters of Confluence Server.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 May 2021
- **Updated:** 12 Feb 2025
- **Also known as:** GHSA-9gqc-c5m8-vf5q

## What is CVE-2020-29445?

CVE-2020-29445 is a medium-severity server-side request forgery vulnerability in Atlassian Confluence Server, published on 7 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Affected versions of Confluence Server before 7.4.8, and versions from 7.5.0 before 7.11.0 allow attackers to identify internal hosts and ports via a blind server-side request forgery vulnerability in Team Calendars parameters.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2020-29445?

It affects 1 product.


Products: Atlassian Confluence Server.

## How do I fix CVE-2020-29445?

No fix has been published for CVE-2020-29445 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-29445 being exploited?

There is no known exploitation of CVE-2020-29445 in the wild and no public exploit code.

## Other vulnerabilities in Atlassian Confluence Server

- [CVE-2019-3396](https://insights.sbomify.com/CVE-2019-3396/): Atlassian Confluence Server and Data Center Server-Side Template Injection (critical 9.8, exploited in the wild)
- [CVE-2019-3398](https://insights.sbomify.com/CVE-2019-3398/): Atlassian Confluence Server and Data Center Path Traversal (high 8.8, exploited in the wild)
- [CVE-2017-7415](https://insights.sbomify.com/CVE-2017-7415/): Auth bypass in n/a (high 7.5)
- [CVE-2016-6668](https://insights.sbomify.com/CVE-2016-6668/): Information disclosure in n/a (high 7.5)
- [CVE-2012-6342](https://insights.sbomify.com/CVE-2012-6342/): Cross-site request forgery in n/a (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-29445 and fix it if it is affected.

What it is: CVE-2020-29445 is a medium-severity server-side request forgery vulnerability in Atlassian Confluence Server, published on 7 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-29445 in the wild and no public exploit code.

Affected product: Atlassian Confluence Server. 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-2020-29445/ (Markdown: https://insights.sbomify.com/CVE-2020-29445/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-29445
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-29445
- OSV: https://osv.dev/vulnerability/CVE-2020-29445

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-29445/
Summaries are generated and may contain mistakes; the official description above is the record.