HighGHSA-4h9c-v5vg-5m6mCVE-2021-21408

Access to restricted PHP code by dynamic static class access in smarty

Published 12 Jan 2022 · Updated 8 Jul 2026

Affected packages

smarty/smartyComposer
Affected
<3.1.43
Fixed in
3.1.43
Update to the fixed version for your release line, for example:composer require smarty/smarty:^3.1.43
smarty/smartyComposer
Affected
>=4.0.0 <4.0.3
Fixed in
4.0.3
Update to the fixed version for your release line, for example:composer require smarty/smarty:^4.0.3

Details

Impact

Template authors could run restricted static php methods.

Patches

Please upgrade to 3.1.40 or higher.

References

See the documentation on Smarty security features on the static_classes access filter.

For more information

If you have any questions or comments about this advisory please open an issue in the Smarty repo

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References

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.