Back
CVE-2018-20149
In WordPress before 4.9.9 and 5.x before 5.0.1, when the Apache HTTP Server is used, authors could upload crafted files that bypass…
- 5.4MediumCVSS base score
- 2.9%Exploitation in 30 daysEPSS · top 13% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In WordPress before 4.9.9 and 5.x before 5.0.1, when the Apache HTTP Server is used, authors could upload crafted files that bypass intended MIME type restrictions, leading to XSS, as demonstrated by a .jpg file without JPEG data.
Timeline
ID reserved
By mitre
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium5.4 | CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 2.9% · top 13% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.
Affected products
n/a
- affected n/a
References
9
- 106220 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://wordpress.org/support/wordpress-version/version-5-0-1/ (opens in a new tab)x_refsource_MISCx_transferred
- https://codex.wordpress.org/Version_4.9.9 (opens in a new tab)x_refsource_MISCx_transferred
- https://wpvulndb.com/vulnerabilities/9175 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/WordPress/WordPress/commit/246a70bdbfac3bd45ff71c7941deef1bb206b19a (opens in a new tab)x_refsource_MISCx_transferred
- DSA-4401 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/ (opens in a new tab)x_refsource_MISCx_transferred
- [debian-lts-announce] 20190211 [SECURITY] [DLA 1673-1] wordpress security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/ (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-12718 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-20149)Record last updated .