phpBB version 3.2.7 allows the stealing of an Administration Control Panel session id by leveraging CSRF in the Remote Avatar feature. The CSRF Token Hijacking leads to stored XSS
https://ssd-disclosure.com/archives/4007/ssd-advisory-phpbb-csrf-token-hijacking-leading-to-stored-xss
https://blog.phpbb.com/category/security/
Source: Mitre, NVD
Published: 2019-09-27
Updated: 2020-08-24
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS: 0.00156