CVE-2026-73243: Kekingcn Kkfileview

Medium severity, CVSS 5.8. EPSS: 0.4% chance of exploitation in the next 30 days.

kkFileView is a universal file online preview project based on Spring Boot. Prior to 5.0.1, the unauthenticated GET /addTask endpoint in kkFileView is omitted from TrustHostFilter and TrustDirFilter in server/src/main/java/cn/keking/config/WebConfig.java, allowing FileConvertQueueTask to fetch an attacker-selected URL after FileHandlerService#getFileAttribute uses the fullfilename parameter to force an OFFICE, COMPRESS, or CAD type. This issue is fixed in version 5.0.1.

Affected products

• Kekingcn Kkfileview: before 5.0.1 (fixed in 5.0.1)

Published 2026-08-11. Last modified 2026-09-09.