# Arc has unauthenticated application log disclosure via \`/api/v1/logs\`

Advisory record · `GHSA-m3qr-fvp4-78xj`

- **Identifiers:** `GHSA-m3qr-fvp4-78xj` · `GO-2026-6907`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **Weakness (CWE):** [CWE-200](https://cwe.mitre.org/data/definitions/200.html) · [CWE-306](https://cwe.mitre.org/data/definitions/306.html)
- **Tags:** [Information disclosure](https://agentprime.io/advisories/tag/info-disclosure.md) · [Authentication bypass](https://agentprime.io/advisories/tag/auth-bypass.md)
- **Published:** 3 Nov 2026
- **Updated:** 5 Nov 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 3 Nov 2026, 16:29 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `github.com/basekick-labs/arc` (Go): affected `<0.0.0-20260615165136-bb7d9761ad98`; fixed in `0.0.0-20260615165136-bb7d9761ad98`

## 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

- 3 Nov 2026, 16:29 UTC: [Confirmed by GitHub Advisory Database](https://github.com/advisories/GHSA-m3qr-fvp4-78xj)
- 3 Nov 2026, 16:29 UTC: First seen by agentprime
- 3 Nov 2026, 16:45 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-m3qr-fvp4-78xj)

## Sources

- [GitHub Advisory Database: GHSA-m3qr-fvp4-78xj](https://github.com/advisories/GHSA-m3qr-fvp4-78xj)
- [OSV: GHSA-m3qr-fvp4-78xj](https://osv.dev/vulnerability/GHSA-m3qr-fvp4-78xj)
- <https://github.com/Basekick-Labs/arc/security/advisories/GHSA-m3qr-fvp4-78xj>
- <https://github.com/Basekick-Labs/arc/pull/506>
- <https://github.com/Basekick-Labs/arc/commit/bb7d9761ad9801e93837762ff7d37460f1df19dd>
- <https://github.com/Basekick-Labs/arc>
- <https://github.com/Basekick-Labs/arc/releases/tag/v26.06.2>

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-m3qr-fvp4-78xj>, 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-m3qr-fvp4-78xj/>. Everything for agents: <https://agentprime.io/llms.txt>.