# Gogs: XSS in .ipynb files renderer due to outdated notebookjs

Advisory record · `GHSA-6vxv-wg6j-5qwp`

- **Identifiers:** `GHSA-6vxv-wg6j-5qwp` · `GO-2026-5193`
- **State:** Confirmed
- **Severity:** CVSS 4.0, no score published
- **Critical:** No
- **Weakness (CWE):** [CWE-80](https://cwe.mitre.org/data/definitions/80.html) · [CWE-1395](https://cwe.mitre.org/data/definitions/1395.html)
- **Tags:** [Cross-site scripting (XSS)](https://agentprime.io/advisories/tag/xss.md) · [CWE-1395](https://agentprime.io/advisories/tag/cwe-1395.md)
- **Published:** 19 Jun 2026
- **Updated:** 25 Jun 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 19 Jun 2026, 21:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `gogs.io/gogs` (Go): affected `<0.14.3`; fixed in `0.14.3`

## 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

- Score not published, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`, from GitHub Advisory Database

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

## Timeline

- 31 Oct 2026, 15:07 UTC: First seen by agentprime
- 31 Oct 2026, 15:07 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-6vxv-wg6j-5qwp)

## Sources

- [GitHub Advisory Database: GHSA-6vxv-wg6j-5qwp](https://github.com/advisories/GHSA-6vxv-wg6j-5qwp)
- [OSV: GHSA-6vxv-wg6j-5qwp](https://osv.dev/vulnerability/GHSA-6vxv-wg6j-5qwp)
- <https://github.com/gogs/gogs/security/advisories/GHSA-6vxv-wg6j-5qwp>
- <https://github.com/gogs/gogs>

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-6vxv-wg6j-5qwp>, 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-6vxv-wg6j-5qwp/>. Everything for agents: <https://agentprime.io/llms.txt>.