What is CVE-2018-3773?

CVE-2018-3773 is a medium-severity vulnerability in Https://github.com/microlinkhq Metascraper, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-07-30.

How severe is CVE-2018-3773?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Https://github.com/microlinkhq Metascraper

CVE-2018-3773

There is a stored Cross-Site Scripting vulnerability in Open Graph meta properties read by the `metascrape` npm module <= 3.9.2.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-07-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (59.2th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Https://github.com/microlinkhq Metascraper — versions Not fixed
Metascraper Project

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

hackerone.com/reports/309367 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-3773?: CVE-2018-3773 is a medium-severity vulnerability in Https://github.com/microlinkhq Metascraper, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-07-30.
How severe is CVE-2018-3773?: Medium severity. CVSS v3 base score is 6.1 out of 10.