wp-includes/functions.php in WordPress before 4.9.1 does not require the unfiltered_html capability for upload of .js files, which might allow remote attackers to conduct XSS attacks via a crafted file.
https://www.debian.org/security/2018/dsa-4090
https://wpvulndb.com/vulnerabilities/8966
https://lists.debian.org/debian-lts-announce/2017/12/msg00019.html
https://github.com/WordPress/WordPress/commit/67d03a98c2cae5f41843c897f206adde299b0509
http://www.securityfocus.com/bid/102024
https://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-release/
https://codex.wordpress.org/Version_4.9.1
Source: Mitre, NVD
Published: 2017-12-02
Updated: 2025-04-20
Base Score: 3.5
Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N
Severity: Low
Base Score: 5.4
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Severity: Medium
EPSS: 0.0207