VulnerabilityModified
CVE-2018-10101
Before WordPress 4.9.5, the URL validator assumed URLs with the hostname localhost were on the same host as the WordPress server.
MEDIUM 6.1EPSS 2.64%
Does this matter?
Lower severity and a low EPSS score (2.64%). Track it; it rarely justifies an emergency change on its own.
Description
Before WordPress 4.9.5, the URL validator assumed URLs with the hostname localhost were on the same host as the WordPress server.
- CVSS 3.0
- 6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 2.64% probability · 85th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-601
- Affected
- wordpress/wordpress · debian/debian linux
- Source
- cve@mitre.org
EPSS moved from 3.7% on 21 September 2026 to 2.6% on 27 October 2026.
References
- http://www.securityfocus.com/bid/104350Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040836Third Party Advisory, VDB Entry
- https://codex.wordpress.org/Version_4.9.5Vendor Advisory
- https://core.trac.wordpress.org/changeset/42894Patch, Vendor Advisory
- https://github.com/WordPress/WordPress/commit/804363859602d4050d9a38a21f5a65d9aec18216Patch, Third Party Advisory
- https://wordpress.org/news/2018/04/wordpress-4-9-5-security-and-maintenance-release/Vendor Advisory
- https://wpvulndb.com/vulnerabilities/9053Third Party Advisory
- https://www.debian.org/security/2018/dsa-4193Third Party Advisory
- http://www.securityfocus.com/bid/104350Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040836Third Party Advisory, VDB Entry
- https://codex.wordpress.org/Version_4.9.5Vendor Advisory
- https://core.trac.wordpress.org/changeset/42894Patch, Vendor Advisory
- https://github.com/WordPress/WordPress/commit/804363859602d4050d9a38a21f5a65d9aec18216Patch, Third Party Advisory
- https://wordpress.org/news/2018/04/wordpress-4-9-5-security-and-maintenance-release/Vendor Advisory
- https://wpvulndb.com/vulnerabilities/9053Third Party Advisory
- https://www.debian.org/security/2018/dsa-4193Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.