# CVE-2023-1387: Information disclosure in Grafana

> Attackers can steal JWT tokens from URL parameters if url_login is enabled, potentially allowing unauthorized access to Grafana.

- **Severity:** Medium 4.2 (`CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 26 Apr 2023
- **Updated:** 13 Feb 2025
- **Also known as:** BIT-grafana-2023-1387, GHSA-5585-m9r5-p86j, GHSA-c3h9-vpfv-3x4m, UBUNTU-CVE-2023-1387, openSUSE-SU-2024:12890-1

## What is CVE-2023-1387?

CVE-2023-1387 is a medium-severity vulnerability in Grafana Grafana, published on 26 Apr 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

Grafana is an open-source platform for monitoring and observability. 

Starting with the 9.1 branch, Grafana introduced the ability to search for a JWT in the URL query parameter auth_token and use it as the authentication token. 

By enabling the "url_login" configuration option (disabled by default), a JWT might be sent to data sources. If an attacker has access to the data source, the leaked token could be used to authenticate to Grafana.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2023-1387?

1 open source package ship an affected version, including grafana. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `grafana` | Bitnami | From 9.1.0 | 9.2.17, 9.3.13, 9.4.9 |
| `grafana` | openSUSE:Tumbleweed | All versions | 9.5.1-1.1 |

Products: Grafana Grafana.

## How do I fix CVE-2023-1387?

Upgrade grafana to a fixed version for your release line: 9.2.17, 9.3.13 or 9.4.9.

## Is CVE-2023-1387 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-1387 exists.

## Other vulnerabilities in Grafana Grafana

- [CVE-2021-43798](https://insights.sbomify.com/CVE-2021-43798/): Grafana Path Traversal (high 7.5, exploited in the wild)
- [CVE-2025-41115](https://insights.sbomify.com/CVE-2025-41115/): Incorrect privilege assignment (critical 10.0)
- [CVE-2022-39328](https://insights.sbomify.com/CVE-2022-39328/): Grafana vulnerable to race condition allowing privilege escalation (critical 9.8)
- [CVE-2022-28660](https://insights.sbomify.com/CVE-2022-28660/): Auth bypass in n/a (critical 9.8)
- [CVE-2022-26148](https://insights.sbomify.com/CVE-2022-26148/): Information disclosure in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-1387 and fix it if it is affected.

What it is: CVE-2023-1387 is a medium-severity vulnerability in Grafana Grafana, published on 26 Apr 2023. An attacker needs administrator access to exploit it, 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-2023-1387 exists.

Affected packages and fixed versions:
- grafana (Bitnami): affected from 9.1.0; fixed in 9.2.17, 9.3.13, 9.4.9

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-2023-1387/ (Markdown: https://insights.sbomify.com/CVE-2023-1387/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-1387
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-1387
- OSV: https://osv.dev/vulnerability/CVE-2023-1387

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-1387/
Summaries are generated and may contain mistakes; the official description above is the record.