Is CVE-2026-73243 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-73243?

CVE-2026-73243 has a CVSS v3 severity of MEDIUM (5.8).

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CVE-2026-73243

Description

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.