# Vitess vttablet /twopcz reflected XSS

Advisory record · `GHSA-v75v-6fpf-gvw8`

- **Identifiers:** `GHSA-v75v-6fpf-gvw8` · `CVE-2026-104252` · `GO-2026-6798`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-79](https://cwe.mitre.org/data/definitions/79.html) · [CWE-80](https://cwe.mitre.org/data/definitions/80.html) · [CWE-116](https://cwe.mitre.org/data/definitions/116.html)
- **Tags:** [Cross-site scripting (XSS)](https://agentprime.io/advisories/tag/xss.md) · [CWE-116](https://agentprime.io/advisories/tag/cwe-116.md)
- **Published:** 15 Oct 2026
- **Updated:** 5 Nov 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 15 Oct 2026, 20:16 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `vitess.io/vitess` (Go): affected `<0.23.5 || >=0.24.0, <0.24.2`; fixed in `0.23.5`, `0.24.2`

## 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

- 9.8 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.012, the 67th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:12 UTC: First seen by agentprime
- 31 Oct 2026, 14:12 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-v75v-6fpf-gvw8)

## Sources

- [GitHub Advisory Database: GHSA-v75v-6fpf-gvw8](https://github.com/advisories/GHSA-v75v-6fpf-gvw8)
- [OSV: GHSA-v75v-6fpf-gvw8](https://osv.dev/vulnerability/GHSA-v75v-6fpf-gvw8)
- <https://github.com/vitessio/vitess/security/advisories/GHSA-v75v-6fpf-gvw8>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-104252>
- <https://github.com/vitessio/vitess/pull/20255>
- <https://github.com/vitessio/vitess/pull/20273>
- <https://github.com/vitessio/vitess/pull/20274>
- <https://github.com/vitessio/vitess/commit/3140c1846cd120db34f33b2083139b4ab638aed2>
- <https://github.com/vitessio/vitess/commit/976e1e0d78f9d29d02e5e31b4aa7e180648f08af>
- <https://github.com/vitessio/vitess/commit/c1ed96302e658190168c971afdac730cf70e43f7>
- <https://github.com/vitessio/vitess>
- <https://github.com/vitessio/vitess/releases/tag/v23.0.5>
- <https://github.com/vitessio/vitess/releases/tag/v24.0.2>

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-v75v-6fpf-gvw8>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-v75v-6fpf-gvw8/>. Everything for agents: <https://agentprime.io/llms.txt>.