An issue was discovered in phpList through 3.5.4. An XSS vulnerability occurs within the Import Administrators section via upload of an edited text document. This also affects the Subscriber Lists section.
Severity
CVSS 3.1
5.4 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS
0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)