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Public proof of conceptFix available

CVE-2018-14716

A public proof of concept exists; no exploitation attested.

  • Published2018-08-06
  • Fixed in3.1.4
  • WeaknessCWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A Server Side Template Injection (SSTI) was discovered in the SEOmatic plugin before 3.1.4 for Craft CMS, because requests that don't match any elements incorrectly generate the canonicalUrl, and can lead to execution of Twig code.

Timeline

dates in UTC
  1. 2018-07-31Exploit-DB entryExploit-DB
  2. 2018-08-0620:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-04 09:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-14716?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-14716?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Nystudio107 seomatic
BranchAffectedFixed in
3.1< 3.1.43.1.4

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Nystudio107 seomatic to 3.1.4

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-45108
Exploit-DB
Proof-of-concept repositories
1 repository, unverified0xB455/CVE-2018-14716
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2018-08-06
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-6j9m-rp7m-3gfg

Frequently asked questions

What is CVE-2018-14716?

A Server Side Template Injection (SSTI) was discovered in the SEOmatic plugin before 3.1.4 for Craft CMS, because requests that don't match any elements incorrectly generate the canonicalUrl, and can lead to execution of Twig code.

Is CVE-2018-14716 actively exploited?

Active exploitation of CVE-2018-14716 has not been confirmed. Its EPSS score was 32.7% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-14716?

CVE-2018-14716 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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Sources for this record