CVE-2018-5776 json
WordPress before 4.9.2 has XSS in the Flash fallback files in MediaElement (under wp-includes/js/mediaelement).
published 2018-01-18 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-17543
- cvss
- 6.1
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 81%
- public exploits
- 0
- none known
Summary
WordPress before 4.9.2 has XSS in the Flash fallback files in MediaElement (under wp-includes/js/mediaelement).
Patch / fix
- wordpress wordpress 4.9.2
- wordpress Debian 14, Debian 13, Debian 12 4.9.2+dfsg-1
debian advisories DEBIAN-CVE-2018-5776
Exploit prediction
2.02% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.1 | CVSS:3.0/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 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
github.com
/WordPress/WordPress/commit/3fe9cb61ee71fcfadb5e002399296fcc1198d850
patch
-
wordpress.org
/news/2018/01/wordpress-4-9-2-security-and-maintenance-release/
release-notes, vendor-advisory
-
codex.wordpress.org
/Version_4.9.2
product, vendor-advisory
-
wpvulndb.com
/vulnerabilities/9006
third-party-advisory
Sources
- CVE List CVE-2018-5776
- NVD CVE-2018-5776
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.