# Twig: PHP code injection via \`{% use %}\` template name Advisory record · `GHSA-7p85-w9px-jpjp` - **Identifiers:** `GHSA-7p85-w9px-jpjp` · `CVE-2026-46633` · `PKSA-h8hf-ytnd-5t9q` - **State:** Confirmed - **Severity:** CVSS 8.7 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:** 21 May 2026 - **Updated:** 4 Nov 2026 - **Reviewed by a person:** No Published by the GitHub Advisory Database at 21 May 2026, 21:24 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. ## Affected packages - `twig/twig` (Packagist): affected `>=1.15.1, <3.26.0`; fixed in `3.26.0` ## Machine-written summary Summary written by Claude Haiku from the source advisory. Not reviewed by a person. > Twig (twig/twig, Packagist) versions before 3.26.0 are affected. A template name in a {% use %} tag can contain a single quote that breaks out of a PHP string in the compiled cache file, so a template author who can supply that name can inject PHP code that runs when the cache file is loaded, even inside the Twig sandbox because {% use %} is always allowed. Upgrade to twig/twig 3.26.0, which escapes single quotes in compiled string literals. 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 - 8.7 High, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`, from CNA (GitHub_M) - **CISA KEV:** Not listed. - **EPSS:** 0.0077, the 56th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days. ## Timeline - 20 May 2026, 07:44 UTC: [Published by the maintainers as a GitHub repository advisory](https://github.com/twigphp/Twig/security/advisories/GHSA-7p85-w9px-jpjp) - 21 May 2026, 21:24 UTC: [Confirmed by GitHub Advisory Database](https://github.com/advisories/GHSA-7p85-w9px-jpjp) - 14 Jul 2026, 21:14 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-46633) - 14 Jul 2026, 22:16 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-46633) - 31 Oct 2026, 14:02 UTC: First seen by agentprime - 31 Oct 2026, 14:02 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-7p85-w9px-jpjp) ## Sources - [GitHub Advisory Database: GHSA-7p85-w9px-jpjp](https://github.com/advisories/GHSA-7p85-w9px-jpjp) - [OSV: GHSA-7p85-w9px-jpjp](https://osv.dev/vulnerability/GHSA-7p85-w9px-jpjp) - - - - - - - - - - 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: .