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MEDIUM severity

GHSA-65j5-vpm7-6xp4 smarty/smarty

MEDIUMFix: smarty-php/smarty@f9ca3c6

GHSA-65j5-vpm7-6xp4 is a medium-severity (CVSS 5.9) Path Traversal vulnerability in smarty/smarty. 1 public exploit reference exists, so weaponization risk is real. A fix is available for smarty/smarty — see the affected versions and patch details below.

Smarty Path Traversal Vulnerability

Also known asCVE-2018-16831
Published
May 14, 2022
Updated
Feb 16, 2024
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Sep 18, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs85th percentile — riskier than 85% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

How urgent is this, really

GHSA-65j5-vpm7-6xp4 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.

Where this sits among everything scored

Of 377,166 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.

Real-World Exposure

1 pkg affected
🐘smarty/smarty

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Smarty before 3.1.33-dev-4 allows attackers to bypass the trusted_dir protection mechanism via a file:./../ substring in an include statement.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistsmarty/smartyall versions3.1.33composer require smarty/smarty:^3.1.33
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for smarty/smarty, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update smarty/smarty to 3.1.33 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-65j5-vpm7-6xp4 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-65j5-vpm7-6xp4 can be triaged on real exposure rather than presence alone.

Tailored to GHSA-65j5-vpm7-6xp4. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

UbuntuMEDIUM

Frequently Asked Questions

Smarty before 3.1.33-dev-4 allows attackers to bypass the trusted_dir protection mechanism via a `file:./../` substring in an include statement.
O3 Security · Impact-Aware SCA

Is GHSA-65j5-vpm7-6xp4 in your dependencies?

O3 Security finds GHSA-65j5-vpm7-6xp4 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

GHSA-65j5-vpm7-6xp4: smarty/smarty | O3 Security