VulnerabilityModified
CVE-2017-17451
The WP Mailster plugin before 1.5.5 for WordPress has XSS in the unsubscribe handler via the mes parameter to view/subscription/unsubscribe2.php.
MEDIUM 6.1EPSS 5.09%
Does this matter?
Lower severity and a low EPSS score (5.09%). Track it; it rarely justifies an emergency change on its own.
Description
The WP Mailster plugin before 1.5.5 for WordPress has XSS in the unsubscribe handler via the mes parameter to view/subscription/unsubscribe2.php.
- CVSS 3.0
- 6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 5.09% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- wpmailster/wp mailster
- Source
- cve@mitre.org
EPSS moved from 6.3% on 21 September 2026 to 5.1% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- https://packetstormsecurity.com/files/145222/WordPress-WP-Mailster-1.5.4.0-Cross-Site-Scripting.htmlThird Party Advisory, VDB Entry
- https://wordpress.org/plugins/wp-mailster/#developersVendor Advisory
- https://wpvulndb.com/vulnerabilities/8973Third Party Advisory
- https://packetstormsecurity.com/files/145222/WordPress-WP-Mailster-1.5.4.0-Cross-Site-Scripting.htmlThird Party Advisory, VDB Entry
- https://wordpress.org/plugins/wp-mailster/#developersVendor Advisory
- https://wpvulndb.com/vulnerabilities/8973Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.