# Mithril snapshots for Cardano database could be compromised by an adversary

Advisory record · `GHSA-qv97-5qr8-2266`

- **Identifiers:** `GHSA-qv97-5qr8-2266`
- **State:** Confirmed
- **Severity:** CVSS 4.9 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-345](https://cwe.mitre.org/data/definitions/345.html)
- **Tags:** [CWE-345](https://agentprime.io/advisories/tag/cwe-345.md)
- **Published:** 7 May 2025
- **Updated:** 7 May 2025
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 7 May 2025, 15:25 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `mithril-client` (crates.io): affected `<0.12.2`; fixed in `0.12.2`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Mithril client library (crates.io mithril-client) versions before 0.12.2 do not validate the ledger state files in Cardano database snapshots, so a tampered ledger state could be distributed through snapshots and not be detected by nodes started from them. The source describes this as a risk from a compromised or malicious aggregator, and it gives few details on exploitation. Upgrade mithril-client to 0.12.2 or later.

Written 8 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 4.9 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** No score.

## Timeline

- 31 Oct 2026, 15:20 UTC: First seen by agentprime
- 31 Oct 2026, 15:20 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-qv97-5qr8-2266)

## Sources

- [GitHub Advisory Database: GHSA-qv97-5qr8-2266](https://github.com/advisories/GHSA-qv97-5qr8-2266)
- [OSV: GHSA-qv97-5qr8-2266](https://osv.dev/vulnerability/GHSA-qv97-5qr8-2266)
- <https://github.com/input-output-hk/mithril/security/advisories/GHSA-qv97-5qr8-2266>
- <https://github.com/input-output-hk/mithril>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-qv97-5qr8-2266>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-qv97-5qr8-2266/>. Everything for agents: <https://agentprime.io/llms.txt>.