CVE-2018-3773 json
metascraper before v5.2.0 vulnerable to stored cross-site scripting
published 2018-07-30 8 y ago modified 2026-06-17 4 mo ago also GHSA-8f64-q7jc-ccgp , EUVD-2018-0381
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
There is a stored Cross-Site Scripting vulnerability in Open Graph meta properties read by the `metascrape` npm module <= 3.9.2.
Patch / fix
Exploit prediction
0.93% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hackerone.com https://hackerone.com/reports/309367 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| GitHub | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | metascraper | <5.2.0 |
5.2.0 |
Affected products
- https://github.com/microlinkhq metascraper
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/microlinkhq/metascraper/pull/169
web
-
hackerone.com
/reports/309367
web, exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-3773
advisory
-
github.com
/microlinkhq/metascraper
package
-
npmjs.com
/advisories/603
web
Sources
- CVE List CVE-2018-3773
- GitHub Advisory GHSA-8f64-q7jc-ccgp
- NVD CVE-2018-3773
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.