twig/twig security advisory

CVE-2026-48805: Sandbox state regression in deprecated internal wrappers in src/Resources/core.php in twig/twig

CVE-2026-48805 is a low-severity security vulnerability in the PHP package twig/twig (CVSS 9.1), published 14 July 2026. It is fixed in 3.27.0; earlier versions are affected. It can be exploited without an account.

low 9.1 published 2026-07-14 · updated 2026-10-24

Affected versions: >= 1.0.0, < 3.27.0
Fixed in: 3.27.0
Newest release: 3.30.0
Severity: Low · CVSS 9.1
Type: Security issue
CWE-693
Exploited in the wild: Not on the CISA KEV list
checked 2026-11-04

Is your twig/twig version affected?

Run composer show twig/twig in your project, then enter the version. We check it against this and every other known twig/twig advisory.

Who can exploit CVE-2026-48805

Access: No account. Anyone who can send a request to an app that uses the affected code.

CVSS vector (scored by NVD): CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Your app is only exposed if it uses the affected part of twig/twig. The advisory below says which part that is. If you are not sure, upgrade anyway: it costs less than finding out.

How to fix CVE-2026-48805 in twig/twig

Find the installed version: composer show twig/twig. If you never required it yourself, composer why twig/twig shows which package pulls it in.
Update it: composer update twig/twig --with-all-dependencies. You need 3.27.0 or newer.
If Composer will not go that high, your composer.json constraint is holding it back. Widen it (for example "twig/twig": "^3.27.0" if you can take that version), or upgrade the package that requires it.
Run composer audit. It reads the same advisory data and should no longer list CVE-2026-48805.
Commit composer.lock and deploy it. On the server, run composer install --no-dev from the lock file, not composer update.

If you cannot upgrade yet

General hardening for this kind of issue while the upgrade waits. None of it replaces the fix.

If your app does not use the affected feature, note that in your audit, but still plan the upgrade.

The CVE-2026-48805 advisory

Twig is a template language for PHP. Prior to 3.27.0, deprecated internal wrappers in src/Resources/core.php do not forward the current sandbox state to CoreExtension::checkArrow(), arraySome(), and arrayEvery(), allowing legacy calls such as twig_array_some(), twig_array_every(), and twig_check_arrow_in_sandbox() to bypass sandbox callable restrictions. This issue is fixed in version 3.27.0.

Description from the CVE record, published by GitHub (the CVE Numbering Authority), via the NVD entry for CVE-2026-48805. Advisory title: “Sandbox state regression in deprecated internal wrappers in src/Resources/core.php”.

References

GitHub security advisory GHSA-p42q-9prx-q5wq github.com
Symfony security advisory symfony.com
Fix commit e235cae github.com
Release v3.27.0 github.com

Other twig/twig advisories

Need help patching or upgrading? Laskyr does PHP and Laravel security fixes and upgrades. Tell us what you run and we reply with a plan and a price.

Ask about a fix

Where this data comes from

Affected and fixed versions: the Packagist security advisories API (GitHub Advisory Database and FriendsOfPHP), the same data composer audit uses. Synced 2026-11-03.
Description, score, weakness and references: NIST National Vulnerability Database (NVD), checked 2026-11-04. This product uses data from the NVD API but is not endorsed or certified by the NVD.
Exploited-in-the-wild status: the CISA Known Exploited Vulnerabilities catalog, checked 2026-11-04.
Compiled by Daniel Lasek at Laskyr from the sources above. The summary, “who can exploit it”, “how to fix it” and hardening sections are our plain-English reading of the record and are generated from it. The quoted description is the record's own text. Spot an error? Tell us.