# GHSA-2gw2-qgjg-xh6p: Namada-apps allows Post-Genesis Validator Bypass

> An attacker can crash the Namada blockchain node by initializing a validator with a negative commission rate, causing consensus failures.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 20 Feb 2025

## What is GHSA-2gw2-qgjg-xh6p?

GHSA-2gw2-qgjg-xh6p is a vulnerability in namada-apps, published on 20 Feb 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

### Impact

Ledger crash. A user is able to initialize a post-genesis validator with a negative commission rate using the `--force` flag. If this validator gets into the consensus set, then when computing PoS inflation inside `fn update_rewards_products_and_mint_inflation`, an instance of `mul_floor` will cause the return of an `Err`, which causes `finalize_block` to error.

### Patches

This issue has been patched in apps version 1.1.0. The PoS validity predicate now enforces that the commission rate is not negative and any transaction that fails the check will be rejected, both for newly initialized validators and for commission rate change of an existing validator.

### Workarounds

There are no workarounds and users are advised to upgrade.

## Which versions are affected by GHSA-2gw2-qgjg-xh6p?

2 open source packages ship an affected version, including namada-apps.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `namada-apps` | crates.io | From 1.0.0 | 1.1.0 |
| `namada-apps` | crates.io | From 1.0.0 | 1.1.0 |

## How do I fix GHSA-2gw2-qgjg-xh6p?

Upgrade namada-apps to 1.1.0 or later.

## Is GHSA-2gw2-qgjg-xh6p being exploited?

There is no known exploitation of GHSA-2gw2-qgjg-xh6p in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GHSA-2gw2-qgjg-xh6p and fix it if it is affected.

What it is: GHSA-2gw2-qgjg-xh6p is a vulnerability in namada-apps, published on 20 Feb 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of GHSA-2gw2-qgjg-xh6p in the wild and no public exploit code.

Affected packages and fixed versions:
- namada-apps (crates.io): affected from 1.0.0; fixed in 1.1.0
- namada-apps (crates.io): affected from 1.0.0; fixed in 1.1.0

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-2gw2-qgjg-xh6p/ (Markdown: https://insights.sbomify.com/GHSA-2gw2-qgjg-xh6p/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GHSA-2gw2-qgjg-xh6p

---
From sbomify Insights: https://insights.sbomify.com/GHSA-2gw2-qgjg-xh6p/
Summaries are generated and may contain mistakes; the official description above is the record.