# GHSA-879p-8gw4-mcpw: fgr Vulnerable to Insecure Default Variable Initialization

> Attackers with log access can view sensitive data in tracebacks due to insecure default variable initialization in the fgr library.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Mar 2024

## What is GHSA-879p-8gw4-mcpw?

GHSA-879p-8gw4-mcpw is a vulnerability in fgr, published on 15 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

### Impact
Any users whom would not desire a traceback to be included in their logs whenever an error is raised in their code will be affected.

If users have inadvertently created a scenario in their code that could cause a traceback to include sensitive information _and_ a malicious entity gained access to their log stream, this could create an issue.

### Patches
None yet... users will need to upgrade to `0.4.*`

### Workarounds
No particularly reasonable ones at present.

### References
* https://cwe.mitre.org/data/definitions/453.html
* https://www.invicti.com/web-vulnerability-scanner/vulnerabilities/stack-trace-disclosure-python/

## Which versions are affected by GHSA-879p-8gw4-mcpw?

2 open source packages ship an affected version, including fgr.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `fgr` | PyPI | All versions to 0.3.2 | None |
| `fgr` | PyPI | All versions to 0.3.2 | None |

## How do I fix GHSA-879p-8gw4-mcpw?

No fix has been published for GHSA-879p-8gw4-mcpw yet. Limit exposure of the affected software until one is available.

## Is GHSA-879p-8gw4-mcpw being exploited?

There is no known exploitation of GHSA-879p-8gw4-mcpw in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GHSA-879p-8gw4-mcpw and fix it if it is affected.

What it is: GHSA-879p-8gw4-mcpw is a vulnerability in fgr, published on 15 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of GHSA-879p-8gw4-mcpw in the wild and no public exploit code.

Affected packages and fixed versions:
- fgr (PyPI): affected all versions up to 0.3.2; no fix listed
- fgr (PyPI): affected all versions up to 0.3.2; 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/GHSA-879p-8gw4-mcpw/ (Markdown: https://insights.sbomify.com/GHSA-879p-8gw4-mcpw/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GHSA-879p-8gw4-mcpw

---
From sbomify Insights: https://insights.sbomify.com/GHSA-879p-8gw4-mcpw/
Summaries are generated and may contain mistakes; the official description above is the record.