High severity · published Sep 14, 2026
CVE-2026-91144
ZFile through 5.0.5 Share Entry Filter Bypass via Download Endpoint
7.5
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZF
zfile · zfile-dev
through 5.0.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91144
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91144
github.com
https://github.com/zfile-dev/zfile
github.com
https://github.com/zfile-dev/zfile/blob/5.0.5/src/main/java/im/zhaojun/zfile/module/share/service/ShareLinkFileService.java
github.com
https://github.com/zfile-dev/zfile/issues/826
www.vulncheck.com
https://www.vulncheck.com/advisories/zfile-through-5.0.5-share-entry-filter-bypass-via-download-endpoint