CVE-2017-17092
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.
Does this matter?
Lower severity and a low EPSS score (3.47%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.0
- 5.4 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 3.47% probability · 89th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- wordpress/wordpress · debian/debian linux
- Source
- cve@mitre.org
EPSS moved from 5.6% on 21 September 2026 to 3.5% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.securityfocus.com/bid/102024Third Party Advisory, VDB Entry
- https://codex.wordpress.org/Version_4.9.1Patch, Release Notes, Vendor Advisory
- https://github.com/WordPress/WordPress/commit/67d03a98c2cae5f41843c897f206adde299b0509Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/12/msg00019.htmlMailing List, Third Party Advisory
- https://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-release/Release Notes, Vendor Advisory
- https://wpvulndb.com/vulnerabilities/8966Third Party Advisory, VDB Entry
- https://www.debian.org/security/2018/dsa-4090Third Party Advisory
- http://www.securityfocus.com/bid/102024Third Party Advisory, VDB Entry
- https://codex.wordpress.org/Version_4.9.1Patch, Release Notes, Vendor Advisory
- https://github.com/WordPress/WordPress/commit/67d03a98c2cae5f41843c897f206adde299b0509Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/12/msg00019.htmlMailing List, Third Party Advisory
- https://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-release/Release Notes, Vendor Advisory
- https://wpvulndb.com/vulnerabilities/8966Third Party Advisory, VDB Entry
- https://www.debian.org/security/2018/dsa-4090Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.