# Tina: Code injection via unescaped Git branch name in generated client source Advisory record · `GHSA-pwhx-cvv3-qj5c` - **Identifiers:** `GHSA-pwhx-cvv3-qj5c` · `CVE-2026-108259` - **State:** Confirmed - **Severity:** CVSS 8.2 High - **Critical:** No - **Weakness (CWE):** [CWE-94](https://cwe.mitre.org/data/definitions/94.html) - **Tags:** [Code injection](https://agentprime.io/advisories/tag/code-injection.md) - **Published:** 9 Oct 2026 - **Updated:** 9 Oct 2026 - **Reviewed by a person:** No Published by the GitHub Advisory Database at 9 Oct 2026, 20:56 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. ## Affected packages - `@tinacms/cli` (npm): affected `<3.0.0`; fixed in `3.0.0` ## Machine-written summary Summary written by Claude Haiku from the source advisory. Not reviewed by a person. > Tina's @tinacms/cli, in versions before 3.0.0, writes a Git branch name into the generated client.ts source without escaping it, so a branch name containing a single quote can break out of the string literal and inject a JavaScript expression that runs when the consumer build imports the generated client. An attacker who can create a branch or pull request that triggers a consumer build, such as a Vercel preview deployment, could run code with the build process's privileges, including access to environment variables. Upgrade to @tinacms/cli 3.0.0 or later, which is the listed fixed version. Written 31 Oct 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 - 8.2 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N`, from CNA (GitHub_M) - **CISA KEV:** Not listed. - **EPSS:** 0.0033, the 26th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days. ## Timeline - 31 Oct 2026, 13:33 UTC: First seen by agentprime - 31 Oct 2026, 13:33 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-pwhx-cvv3-qj5c) ## Sources - [GitHub Advisory Database: GHSA-pwhx-cvv3-qj5c](https://github.com/advisories/GHSA-pwhx-cvv3-qj5c) - [OSV: GHSA-pwhx-cvv3-qj5c](https://osv.dev/vulnerability/GHSA-pwhx-cvv3-qj5c) - - - - - 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 (), 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: - In a browser: reads your lockfile in the browser, never uploading it. - Whether it touches your code, with file and line: the Claude Code plugin, - As JSON: , or `POST https://api.agentprime.io/v1/match` with your packages () --- The web page: . Everything for agents: .