Twig: Arbitrary PHP code execution via `_self.(<string>)` macro-reference compilation

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

• CISA KEV Not listed.
• EPSS 0.0064, the 51st percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 20 May 2026, 07:44 UTC Published by the maintainers as a GitHub repository advisory
2. 31 Oct 2026, 13:59 UTC First seen by agentprime
3. 31 Oct 2026, 13:59 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-45vw-wh46-2vx8
• OSV: GHSA-45vw-wh46-2vx8
• github.com/twigphp/Twig/security/advisories/GHSA-45vw-wh46-2vx8
• github.com/FriendsOfPHP/security-advisories/blob/master/twig/twig/CVE-2026-46640.yaml
• github.com/twigphp/Twig
• github.com/vladko312/extras/blob/main/CVE-2026-46640.py
• symfony.com/cve-2026-46640

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.