Vulnerability · Published Sep 14, 2026 · Assigned by VulnCheck
CVE-2026-91144ZFile through 5.0.5 Share Entry Filter Bypass via Download Endpoint
High 7.5
In plain English
A high-severity authorization bypass via user-controlled key in zfile from zfile-dev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 56.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 products (as reported)
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
References
- GitHub Issue #826 issue-tracking
- https://github.com/zfile-dev/zfile product
- ShareLinkFileService.java at 5.0.5 technical-description
- VulnCheck Advisory: ZFile through 5.0.5 Share Entry Filter Bypass via Download Endpoint third-party-advisory