CVE-2026-91144

Summary

ZFile through 5.0.5 fails to validate requested file paths against a share link's allowed entries on the download endpoint. Attackers holding a share link can supply arbitrary file paths as query parameters to download any file under the shared base directory, bypassing the intended access restrictions.

Affected Software

Weaknesses

• CWE-639: Authorization Bypass Through User-Controlled Key

References

• https://github.com/zfile-dev/zfile/issues/826
• https://github.com/zfile-dev/zfile
• https://github.com/zfile-dev/zfile/blob/5.0.5/src/main/java/im/zhaojun/zfile/module/share/service/ShareLinkFileService.java
• https://www.vulncheck.com/advisories/zfile-through-5.0.5-share-entry-filter-bypass-via-download-endpoint

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