cosenary Instagram-PHP-API (aka Instagram PHP API V2), as used in the UserPro plugin through 4.9.32 for WordPress, has XSS via the example/success.php error_description parameter.
https://wpvulndb.com/vulnerabilities/9815
https://github.com/cosenary/Instagram-PHP-API/commits/master
https://www.exploit-db.com/exploits/47304
http://packetstormsecurity.com/files/154206/WordPress-UserPro-4.9.32-Cross-Site-Scripting.html
Source: Mitre, NVD
Published: 2019-09-04
Updated: 2026-06-17
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.82962