# Event type spoofing via UntrustedType in github.com/google/go-eventlog

Advisory record · `GO-2026-6893`

- **Identifiers:** `GO-2026-6893`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **Published:** 5 Nov 2026
- **Updated:** 5 Nov 2026
- **Reviewed by a person:** No

Published by OSV at 5 Nov 2026, 22:55 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `github.com/google/go-eventlog` (Go): affected `<0.0.3-0.20261001001437-1991f15bc4b0`; fixed in `0.0.3-0.20261001001437-1991f15bc4b0`

## 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

No source has published a CVSS score for this record yet.

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

## Timeline

- 5 Nov 2026, 23:15 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GO-2026-6893)
- 5 Nov 2026, 23:34 UTC: First seen by agentprime

## Sources

- [OSV: GO-2026-6893](https://osv.dev/vulnerability/GO-2026-6893)
- <https://github.com/google/go-eventlog/commit/1991f15bc4b01cffc4e329e9e532c1ae930ae5aa>
- <https://github.com/google/go-eventlog/pull/39>
- <https://bschaatsbergen.com/posts/attacking-rats-verifiers-through-the-tcg-event-log/>

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/GO-2026-6893>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GO-2026-6893/>. Everything for agents: <https://agentprime.io/llms.txt>.