# Anki's local HTTP server does not sufficiently validate requests

Advisory record · `GHSA-869j-r97x-hx2g`

- **Identifiers:** `GHSA-869j-r97x-hx2g` · `CVE-2026-59153` · `PYSEC-2026-3459`
- **State:** Confirmed
- **Severity:** CVSS 2.1 Low
- **Critical:** No
- **Weakness (CWE):** [CWE-22](https://cwe.mitre.org/data/definitions/22.html) · [CWE-346](https://cwe.mitre.org/data/definitions/346.html)
- **Tags:** [Path traversal](https://agentprime.io/advisories/tag/path-traversal.md) · [CWE-346](https://agentprime.io/advisories/tag/cwe-346.md)
- **Published:** 19 Jun 2026
- **Updated:** 23 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 19 Jun 2026, 22:10 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `aqt` (PyPI): affected `<25.9.3`; fixed in `25.9.3`

## Machine-written summary

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

> Anki's local HTTP server in the aqt package, versions before 25.9.3, does not block requests from other origins despite its CORS setup. A malicious website could use a browser to make side-effecting requests to the server, with the impact varying by browser. The source gives few details on exploitation conditions. Upgrade aqt to version 25.9.3 or later.

Written 5 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

- 2.1 Low, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0026, the 18th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:41 UTC: First seen by agentprime
- 31 Oct 2026, 14:41 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-869j-r97x-hx2g)

## Sources

- [GitHub Advisory Database: GHSA-869j-r97x-hx2g](https://github.com/advisories/GHSA-869j-r97x-hx2g)
- [OSV: GHSA-869j-r97x-hx2g](https://osv.dev/vulnerability/GHSA-869j-r97x-hx2g)
- <https://github.com/ankitects/anki/security/advisories/GHSA-869j-r97x-hx2g>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-59153>
- <https://github.com/ankitects/anki/commit/858e5689d0e4fd24f74856c7e8f245412694a219>
- <https://github.com/ankitects/anki>
- <https://github.com/ankitects/anki/releases/tag/25.09.3>
- <https://x.com/taviso/status/2051310678800253318>

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-869j-r97x-hx2g>, 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-869j-r97x-hx2g/>. Everything for agents: <https://agentprime.io/llms.txt>.