VulnerabilityModified

CVE-2019-20041

wp_kses_bad_protocol in wp-includes/kses.php in WordPress before 5.3.1 mishandles the HTML5 colon named entity, allowing attackers to bypass input sanitization, as demonstrated by the javascript&colon; substring.

CRITICAL 9.8EPSS 4.65%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (4.65%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 4.65% probability · 91th percentile
CISA KEV: Not listed
Weakness: CWE-20
Affected: wordpress/wordpress · debian/debian linux
Source: cve@mitre.org

References

https://github.com/WordPress/wordpress-develop/commit/b1975463dd995da19bb40d3fa0786498717e3c53Patch
https://lists.debian.org/debian-lts-announce/2020/01/msg00010.htmlMailing List, Third Party Advisory
https://seclists.org/bugtraq/2020/Jan/8Mailing List, Third Party Advisory
https://wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/Release Notes, Vendor Advisory
https://www.debian.org/security/2020/dsa-4599Third Party Advisory
https://www.debian.org/security/2020/dsa-4677Third Party Advisory
https://github.com/WordPress/wordpress-develop/commit/b1975463dd995da19bb40d3fa0786498717e3c53Patch
https://lists.debian.org/debian-lts-announce/2020/01/msg00010.htmlMailing List, Third Party Advisory
https://seclists.org/bugtraq/2020/Jan/8Mailing List, Third Party Advisory
https://wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/Release Notes, Vendor Advisory
https://www.debian.org/security/2020/dsa-4599Third Party Advisory
https://www.debian.org/security/2020/dsa-4677Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.