# CVE-2020-11529: Open Redirect in Grav

> An open redirect vulnerability in Grav CMS allows attackers to redirect users to malicious sites, potentially facilitating phishing attacks.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 4 Apr 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-wrxc-mr2w-cjpv

## What is CVE-2020-11529?

CVE-2020-11529 is a medium-severity vulnerability in Getgrav Grav, published on 4 Apr 2020. 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

Common/Grav.php in Grav before 1.7 has an Open Redirect. This is partially fixed in 1.6.23 and still present in 1.6.x.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2020-11529?

2 open source packages ship an affected version, including getgrav/grav. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `getgrav/grav` | Packagist | All versions | 1.6.23 |
| `getgrav/grav` | Packagist | All versions | 1.6.23 |

Products: Getgrav Grav.

## How do I fix CVE-2020-11529?

Upgrade getgrav/grav to 1.6.23 or later.

## Is CVE-2020-11529 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-11529 exists.

Public exploit code:

- Grav < 1.7 - Open Redirect (nuclei): http/cves/2020/CVE-2020-11529.yaml

## Other vulnerabilities in Getgrav Grav

- [CVE-2023-34251](https://insights.sbomify.com/CVE-2023-34251/): Grav Server Side Template Injection vulnerability (critical 10.0)
- [CVE-2025-46199](https://insights.sbomify.com/CVE-2025-46199/): Cross-site scripting in n/a (critical 9.8)
- [CVE-2021-47812](https://insights.sbomify.com/CVE-2021-47812/): GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticated) (2) (critical 9.3)
- [CVE-2025-66844](https://insights.sbomify.com/CVE-2025-66844/): Grav may be vulnerable to SSRF attack via Twig Templates (critical 9.1)
- [CVE-2022-2073](https://insights.sbomify.com/CVE-2022-2073/): Code Injection in getgrav/grav (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-11529 and fix it if it is affected.

What it is: CVE-2020-11529 is a medium-severity vulnerability in Getgrav Grav, published on 4 Apr 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-11529 exists.

Affected packages and fixed versions:
- getgrav/grav (Packagist): affected all versions; fixed in 1.6.23
- getgrav/grav (Packagist): affected all versions; fixed in 1.6.23

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-2020-11529/ (Markdown: https://insights.sbomify.com/CVE-2020-11529/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-11529
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-11529
- OSV: https://osv.dev/vulnerability/CVE-2020-11529

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-11529/
Summaries are generated and may contain mistakes; the official description above is the record.