CVE-2026-73243
MediumCVSS 5.8Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
kkFileView prior to 5.0.1 has an unauthenticated GET /addTask endpoint that is omitted from TrustHostFilter and TrustDirFilter, allowing FileConvertQueueTask to fetch an attacker-selected URL after FileHandlerService#getFileAttribute uses the fullfilename parameter to force an OFFICE, COMPRESS, or CAD type.
Risk Assessment
The risk includes potential SSRF attacks or downloading malicious files, which could compromise system integrity.
Recommendation
Upgrade kkFileView to version 5.0.1 or later, which includes a fix.
Original NVD description (English source)
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.