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
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 4.52% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 91.2% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2019-12-27 07:14Z6 YR AGO
- Last updated
- 2024-08-05 02:32Z2 YR AGO
- Reserved
- 2019-12-27
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-20Improper Input ValidationClass
- Data version
- 5.1
- Document digest
- 3d871daf334e5b70538bf218393efd47c100f6ee4d0237a94395e3cc8dcb2ce5
05 Affected products
06 References
- wordpress.orghttps://wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/
- github.comhttps://github.com/WordPress/wordpress-develop/commit/b1975463dd995da19bb40d3fa0786498717e3c53
- seclists.org20200108 [SECURITY] [DSA 4599-1] wordpress security updatehttps://seclists.org/bugtraq/2020/Jan/8
- www.debian.orgDSA-4599https://www.debian.org/security/2020/dsa-4599
- lists.debian.org[debian-lts-announce] 20200114 [SECURITY] [DLA 2067-1] wordpress security updatehttps://lists.debian.org/debian-lts-announce/2020/01/msg00010.html
- www.debian.orgDSA-4677https://www.debian.org/security/2020/dsa-4677
07 Fixed in
Debian 12
- wordpress Fixed in 5.3.2+dfsg1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- wordpress Fixed in 5.3.2+dfsg1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- wordpress Fixed in 5.3.2+dfsg1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- wordpress No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- wordpress No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.