CVE-2019-16222 — WordPress before 5
WordPress before 5.2.3 has an issue with URL sanitization in wp_kses_bad_protocol_once in wp-includes/kses.php that can lead to cross-site scripting (XSS) attacks.
Published
2019-09-11T13:07:15.000Z
Last modified
2024-08-05T01:10:41.572Z
01What is this vulnerability?
WordPress before 5.2.3 has an issue with URL sanitization in wp_kses_bad_protocol_once in wp-includes/kses.php that can lead to cross-site scripting (XSS) attacks.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2019-09-11T13:07:15.000Z
- Last modified: 2024-08-05T01:10:41.572Z
09References
- wpvulndb.com — https://wpvulndb.com/vulnerabilities/9867
- wordpress.org — https://wordpress.org/news/2019/09/wordpress-5-2-3-security-and-maintenance-rele…
- core.trac.wordpress.org — https://core.trac.wordpress.org/changeset/45997
- github.com — https://github.com/WordPress/WordPress/commit/30ac67579559fe42251b5a9f887211bf61…
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2019/10/msg00023.html
- seclists.org — https://seclists.org/bugtraq/2020/Jan/8
- www.debian.org — https://www.debian.org/security/2020/dsa-4599
- www.debian.org — https://www.debian.org/security/2020/dsa-4677
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