What is CVE-2026-55498?

CVE-2026-55498 is a medium-severity vulnerability in Error311 Filerise, classified under Improper Link Resolution Before File Access. CVSS score: 4.8/10. Published 2026-10-14.

How severe is CVE-2026-55498?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Vulnerability in Error311 Filerise

CVE-2026-55498

FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.15.0, FileRise public shared-folder links with subfolder browsing enabled can follow a symbolic link inside the shared folder to a sibling directory under the upload root. An unauthenticated holder of a valid share token can use shared-folder listing, direct download, or ZIP creation to access files outside the folder that was actually shared. The flaw occurs because the affected shared-folder paths resolve symlinks without enforcing the original shared folder as the real-path boundary. This issue is fixed in version 3.15.0.

Published 2026-10-14 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Error311 Filerise — versions < 3.15.0

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

Frequently asked questions

What is CVE-2026-55498?: CVE-2026-55498 is a medium-severity vulnerability in Error311 Filerise, classified under Improper Link Resolution Before File Access. CVSS score: 4.8/10. Published 2026-10-14.
How severe is CVE-2026-55498?: Medium severity. CVSS v3 base score is 4.8 out of 10.