CVE-2018-16831
CVE-2018-16831 is a medium-severity vulnerability in Smarty with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: Medium (CVSS 3.x base score 5.9)
- CVSS v2: 7.1
- EPSS exploit prediction: 3% (84th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Smarty
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2018-16831?
- Smarty before 3.1.33-dev-4 allows attackers to bypass the trusted_dir protection mechanism via a file:./../ substring in an include statement.
- How severe is CVE-2018-16831?
- CVE-2018-16831 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2018-16831 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-16831?
- CVE-2018-16831 affects Smarty. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-16831?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2018-16831 published?
- CVE-2018-16831 was published on 2018-09-11 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:smarty:smarty:*:*:*:*:*:*:*:*
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