CVE-2026-92806

Description

phpList versions before 3.6.17 fail to validate cross-site request forgery tokens in the mass subscriber removal form handler. Attackers can induce logged-in administrators to visit crafted pages that silently delete and blacklist arbitrary subscriber addresses without authentication verification.

References

• https://github.com/geo-chen/oss/blob/main/phplist3.md
• https://github.com/phpList/phplist3
• https://github.com/phpList/phplist3/blob/v3.6.16/public_html/lists/admin/massremove.php#L13-L24
• https://github.com/phpList/phplist3/blob/v3.6.17/public_html/lists/admin/massremove.php#L10
• https://www.vulncheck.com/advisories/phplist-before-3.6.17-cross-site-request-forgery-via-massremove-php